Photosynthesis In Higher Plants Questions

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Photosynthesis In Higher Plants Questions

List of photosynthesis in higher plants Questions

Question NoQuestionsClass
1( N A D^{+} ) is reduced in photorespiration
inside
A. Mitochondria
B. Mitochondria and peroxisome
c. Mitochondria and chloroplasts
D. chloroplasts and peroxisomes
11
2State Blackman’s Law of limiting
factors.
11
3Name the following:
A photosynthetic stage which may take place in the presence and absence of light.
11
4Melvin Calvin recieved nobel prize for
A. Botany
B. Plant Physiology
c. Biochemistry
D. Chemistry
11
540. The process through which excess
of light energy is dissipated in
photosynthesis is known as
(1) Quenching
(2) Scavenging
(3) Photolysis
(4) Photophosphorylation
11
6Plants which exhibit photorespiration
are
( mathbf{A} cdot C_{4} ) plants
B. ( C_{3} ) plants
c. cam plants
D. Alpine plants
11
7Peroxisome is associated with.
A. Photorespiration.
B. Photosynthesis.
c. Photoperiodism.
D. Phototropism.
11
8Glycolate metabolism occurs in
A. Lysosome
B. Ribosomes
c. Glyoxysomes
D. Peroxisome
11
9Which of the following would happen if
the supply of ( O_{2} ) is decreased to an ¡Illuminated wheat plant?
A. Its photosynthesis would decrease.
B. Its respiration would increase.
C. Its photosynthesis would increase
D. All the physiological process would stop.
11
10Hill reaction occurs in
A. High altitude plants
B. Total darkness
C. Absence of water
D. Presence of ferricyanide
11
11Which compound is four
carbon compound in the ( C_{3} ) cycle?
A. Erythrose – 4 – phosphate
B. Dihydroxy acetone phosphate
C. 3- Phosphoglyceraldehyde
D. Oxalo acetic acid
11
12What do you mean by limiting factors?
Explain effect of light on photosynthesis. Which hormone is
named as hormone of flight and flight?
11
13The structure known as peroxisome is associated with
A. Photosynthesis.
B. Respiration.
c. Photorespiration.
D. Photophosphorylation.
11
14Chemosynthetic pathway of photosynthesis occur in :-
A. cytosol
B. Stroma
c. Membrane of thylakoid
D. Lumen
11
15Product (s) of ( Z- )scheme which is/are
utilise in calvin cycle, is/are:
A. only ( A T P )
B. ( A T P, N A D P H ) and ( O_{2} )
c. ( A T P ) and ( N A D P H )
D. only ( O_{2} )
11
16Which of the following takes place during Calvin cycle?
A. Photophosphorylation
B. Replication
c. Reduction and carboxylation
D. None of the above
11
17Chemiosmotic theory of ATP synthesis
in mitochondria is based on
A ( cdot mathrm{K}^{+} ) gradient
B. H ( ^{+} ) gradient
c. Nat gradientt
D. ( mathrm{ca}^{2+} ) gradient.
11
18The correct sequence of organelles in which glycolate and glyoxylate are produced sequentially in photorespiration is
A. Chloroplast and mitochondria
B. Chloroplast and peroxisome
c. Peroxisome and mitochondria
D. Peroxisome and chloroplast
11
19In non-cyclic photophosphorylation there is photolysis of 12 water
molecules. How many ( boldsymbol{H}^{+} ) are formed?
A ( .24 H^{+} )
B . 36 ( H^{+} )
c. ( 12 H^{+} )
D . 32 ( H^{+} )
11
20Radioactive ( C^{14} ) is given to ( C 0_{2} ) and
released to atmosphere. This ( C 0_{2} ) is
taken by ribulose diphosphate in a ( C_{3} )
plant. First radioactive ( C^{14} ) is seen in
which compound?
A. PGAL
B. PEP
c. RMP
D. PGAA
11
21Main factor which limits the rate of
photosynthesis on a clear day is
A. Chlorophyll
B. Light
( c cdot C O_{2} )
D. water
11
22During photorespiration the oxygen consuming reaction occur in
A. Grana of chloroplast and peroxisomes
B. Stroma of chloroplasts
c. Stroma of chloroplasts and mitochondria
D. Stroma of chloroplasts and peroxisomes
11
23Chloroplasts without grana are known
to occur in
A. Bundle sheath cells of ( C_{3} ) plants
B. Mesophyll cells of ( C_{4} ) plants
C. Bundle sheath cells of ( C_{4} ) plants
D. Mesophyll cells of all plants
11
24Define photo-oxidation and photorespiration.11
25What is photorespiration? Explain it with diagrammatic representation.11
26n the given figure, what are the
substances labelled as ( P, Q, R ) and ( S ? )
A . P-PGA, Q-Glyoxylate, ( R-N H_{3} ), S-serine
3. P-Glycolate, Q-Glyoxylate, ( R-N H_{3} ), S-serin
c. P-Glycolate, Q-Glyoxylate, ( R-C O_{2} ), S-serin
‘. P-RuBP, Q-Glycerate, ( R-C O_{2} ), S-Serine
11
27Choose the correct statement.
A. Stroma lamella membrane lacks PS II and PS I.
B. When PS I is functional, electron flow in a noncyclic
way.
C. ATPase enzyme consists of ( F_{0} ) and ( F_{1} ) units
D. NADP reductase is a part of PS II.
11
28Which process is related with
photosynthesis?
A. Phosphorylation
B. Translation
c. Transcription
D. None of the above
11
29Explain why respiration is said to be the reverse of photosynthesis.11
30Which one of the following is a wasteful
process?
A. Photorespiration
B. Respiration
c. Photosynthesis
D. ETS
11
31Give an account of factors which affect
photosynthesis.
11
32Which part of the photosynthetic process does not require light and temperature?
A. Hill’s reaction
B. Blackman’s reaction
c. warburg’s reaction
D. Emerson’s reaction
11
33Law of limiting factor is
A. Law of maximum
B. Law of minimum
C. Law of optimum
D. All of the above
11
34Which of the following is not a factor in determining rate of photosynthesis?
A. ( mathrm{C}_{6} mathrm{H}_{12} mathrm{O}_{6} )
B. ( mathrm{cO}_{2} )
c. ATP
D. Light
11
35Blackman’s law was conceived in
connection with
A. Photosynthesis
B. Respiration
c. Transpiration
D. Root pressure.
11
36Why is photorespiration also called ( C_{2} )
cycle?
11
37Very short answer type.
Explain ( C O_{2} ) compensation point
11
38If plant is first exposed to light of 730 nm wavelength and then to of ( 600 mathrm{nm} ) then plant will
A. Show inhibited growth
B. Resume normal growth
c. will not grow
D. Die immediately
11
39The law of limiting factor for photosynthesis was given by
A . R. Hill
B. Krebs
c. Calvin
D. Blackman
11
40The first scientist to find out the role of
light in photosynthesis was
A. Ingenhousz
B. Senebier
c. Priestley
D. sachs
11
41Chemiosmotic hypothesis given by Peter Mitchell proposes the mechanism of
A. Synthesis of ATP.
B. synthesis of FADH
c. synthesis of NADH.
D. Synthesis of NADPH.
11
42The law of minimum was proposed by
A. Priestly
B. Liebig
c. ні|
D. Blackman
11
43Very short answer type.
Give the exact location and function of
grana
11
44At high temperatures, the enzymes of photosynthesis gets deactivated
because
A. They get denatured
B. They are proteinous in nature
c. They have optimum range of temperature at which they are functional
D. All of the above
11
45Main factor which limits the rate
of photosynthesis on a clear day is
A. Chlorophyll.
B. Light.
c. ( C O_{2} )
D. water
11
46First acidic compound formed in ( C_{4} )
cycle is
A. OAA
B. Malic acid
c. Pyuvic acid
D. PGAA
11
47Assertion
In ( C_{4} ) cycle, first stable product has 4
carbon compound
Reason
In ( C_{4} ) plants, ( C_{3} ) cycle is absent
A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
C. Assertion is correct but Reason is incorrect
D. Both Assertion and Reason are incorrect
11
48(a) Give a schematic outline of
photorespiration.
(b)Differentiate between
photophosphorylation and photorespiration.
11
49Photorespiration takes place in which of the following organelles?
A. Chloroplast and mitochondria
B. Mitochondria and peroxisome
c. Bundle sheath cells and chloroplasts
D. chloroplast, peroxisome and mitochondria.
11
50Explain chemiosmotic hypothesis for ATP synthesis.11
51The father of ATP cycle is
A. White
B. Lipmann
c. Pasteur
D. Buchner
11
52Select the correct option:
Identify ( A, B, C, D ) and ( E ) in the given flow
chart showing Z-scheme of light
reaction
( mathbf{A} cdot A-P_{700} ; mathrm{B}-H^{+} ) acceptor; ( mathrm{C}-e^{-} ) acceptor; ( mathrm{D}-P_{680} ; mathrm{E} )
( N A D P^{+} )
B. A-Photo -system I ; B- ( e^{-} ) acceptor; C- ( e^{-} ) transport
system; D-Photo system II; E- NADPH
C. A-Photo-system II; B- ( H^{+} ) acceptor; ( mathrm{C}-e^{-} ) acceptor; ( mathrm{D} ) –
( P_{700} ; ) E- NADPH.
D. A-Photo-system II; B- ( e^{-} ) acceptor; ( C-e^{-} ) transport
system; D- photo-system I; E- NADPH.
11
53The function of ATP in photosynthesis is the transfer of energy from the
A. Dark reaction to the light reaction
B. Light reaction to the dark reaction
c. chloroplasts to mitochondria
D. Mitochondria to chloroplasts
11
54Ammonia is released by plants during
( A cdot C ) A ( M )
B. Dark respiration
c. Photorespiration
D. All of the above
11
55Who first indicated that water is
electron donor in photosynthesis?
A. Arnon
B. Calvin
c. Blakeslee
D. Van Niel.
11
56Ratio between 2 -carbon and 3 -carbon
intermediate having ( mathrm{NH}_{2} ) group formed
in photosynthetic oxidation cycle is
A. 2:
B. 1:
( c cdot 3: 2 )
D. 3: 4
11
57Number of cell organelles involved in photorespiration are
A. one
B. Two
c. Three
D. Four
11
58The principle of limiting factor was given by
A. Hill
B. F. F Blackman
c. will statter
D. Calvin
11
59The concentration of carbon dioxide
beyond which it fails to accelerate the photosynthesis is known as
A. Saturation point.
B. Compensation point.
c. Both A and B
D. None of the above
11
60As a result of pyrolysis, which one of the following is produced
A. Alcohol
B. Charcoal
c. charcoal and gas
D. Charcoal, gas and oil
11
61Maize, Sugarcane and some other tropical plants have high efficiency of
( C O_{2} ) fixation because they operate
A. Calvin cycle
B. Hatch-Slack cycle
c. TcA cycle
D. PP pathway
11
62If light intensity increases the first
limiting factor is
( A cdot C O_{2} )
B. Starch
( c cdot O_{2} )
( D cdot s O_{2} )
11
63Application based questions Suggest some habitats in which (a) light intensity or
(b) temperature might be limiting factors in photosynthesis.
11
64Assertion
Under conditions of high light intensity
and limited ( C O_{2} ) supply,
photorespiration has a useful role in
protecting the plants from photooxidative damage.
Reason
If enough ( C O_{2} ) is not available to utilize
light energy for carboxylation to proceed, the excess energy may not cause damage to plants.
A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
c. Assertion is correct but Reason is incorrect
D. Both Assertion and Reason are incorrect
11
65During photosynthesis
A. Water is reduced and ( C O_{2} ) is oxidized.
B. ( C O_{2} ) is reduced and water is oxidized.
C ( . ) Both ( C O_{2} ) and water get reduced.
D. Both ( C O_{2} ) and water get oxidized.
11
66The Blackman’s law of limiting factor is an elaboration of
A. Liebig’s law of minimum.
B. Hatch and Slack mechanism.
c. sach’s cardinal points.
D. None of the above
11
67Which of the option is correct for
photorespiration?
A. In peroxisome, glycerate forms phosphoglycolate
B. In chloroplast, glycerate forms glycine
C. In mitochondrion, glycine forms serine
D. In bundle sheath, serine forms glycine.
11
68Which of the following are necessary for photosynthesis?
A. Light and suitable temperature
B. Chlorophyll and water
c. Carbon dioxide
D. All of the above
11
69If the rate of translocation of food is
slow, what will be the effect on
photosynthesis?
A. It will increase
B. It will remain same
c. Become double
D. It will decrease
11
70Why is photo respiration is considered as a destructive activity?11
71Amount of ( C O_{2} ) mixed annually is
about
A. ( 70 times 10^{10} mathrm{Kg} )
в. ( 70 times 10^{11} mathrm{Kg} )
c. ( 70 times 10^{13} mathrm{Kg} )
D. ( 70 times 10^{13} g )
11
72In which form does the food get
transported in plants?
A. sucrose
B. Fructose
c. Glucose
D. Lactose
11
73Which factor is not limiting in normal conditions for photosynthesis?
A. Light intensity
B. ( mathrm{cO}_{2} )
c. water
D. chlorophyll
11
74fungal cell with different parts labelled as ( A, B, C ) and ( D . ) Which of the following statements are true with regard to the
fungal cell structure?
(i) A contains mucopolysaccharides
which are also present in exoskeleton of insects and crustaceans.
(ii) D are usually more than one in number in case of aseptate hyphae.
(iii) Carotenes and xanthophylls are
present in ( C, ) which harvest light energy
for photosynthesis.
(iv) ( mathrm{B} ) is the reserve food material,
usually stored in the form of starch and
oil.
A. (i) and (ii)
B. (iii) and (iv)
C. (i), (ii) and (iv)
D. (ii), (iii) and (iv)
11
75The reaction involved in reduction of
( N A D^{+} ) is
A. Glucose- -> Glucose 6- –
B. Fructose 1, 6- diphosphate>PGAL+DiBAP
c. Glucose 6-P – ->Fructose 6 – –
11
76Study the graph which shows results of
three different experiments ( P, Q ) and ( R )
Concentrate on graphs ( mathrm{P} ) and ( mathrm{Q} ) and
answer the following questions?
What is the difference between the
Curves?
A. The temperature has increased at
B. The rate of photosynthesis increased faster in ( Q ) and in ( P )
C. The rate of photosynthesis lowered in ( Q ) and
D. The temperature has lowered at ( Q )
11
77( C_{4} ) pathway of ( C O_{2} ) fixation was discovered by
A. Blackman
B. Hatch and Slack
c. Emerson and Arnold
D. Arnon
11
78Plant shows adaptations to hot and dry
climates is
I. CAM
II. Mycorrhizae
III. ( C_{4} ) photosynthesis
A. I only
B. II only
c. I and ॥
D. I and III
E . ।, ॥।, and III
11
79Of the total incident solar radiation the
proportion of PAR is
A. More than ( 80 % )
B. About 70%
c. About 60 %
D. Less than 50 %
11
80Dark reaction of photosynthesis is called so, because
A. It can also occurin dark
B. It does not require light.
c. cannot occur during day time
D. It occurs more rapidly in night
11
81How many molecules of water are
needed by a green plant to produce one molecule of hexose/reduce 6 molecules
of ( C O_{2} ? )
( A cdot 6 )
B. 12
( c cdot 24 )
( D )
11
82In which one of the following do the two names refer to the same thing?
A. Krebs cycle and Calvin cycle
B. Tricarboxylic acid cycle and citric acid cycle
c. Citric acid cycle and Calvin cycle
D. Tricarboxylic acid cycle and urea cycle
11
83The energy wastage occurs during
A. Dark respiration
B. Photosynthesis
C . Glycolysis
D. Photorespiration
11
84Who is called as ‘father of plant
physiology’?
A. K. V Thimann
B. Stephen Hales
c. M. Calvin
D. E. Rabinowitch
11
85( C_{3} ) cycle predominantly operates in
A. Cytoplasm and mitochondria
B. Mitochondria and peroxysome
c. stroma
D. Stroma and grana of a chloroplast
11
86The term photorespiration was coined by
A. Decker and Tio.
B. Julius von Sachs
c. Rouhani.
D. O-leri
11
87The process of
photophosphorylation was discovered
by
A. Calvin
B. Arnon
c. Priestley
D. Warburg
11
88Respiration initiated in chloroplasts and occurring in light is called
A. Aerobic respiration
B. Anaerobic respiration
c. Fermentation
D. Photorespiration
11
89Which of the following is not related with photosynthesis in purple sulphur bacteria :-
A. Requirement of hydrogen doner
B. Requirement of light
c. Release of oxygen
D. Use of atmospheric ( C O_{2} )
11
90In the chart of photophosphorylation,
what does ‘a’ represent?
A. Cyt a
B. Cyt ( a_{3} )
c. FRS
D. PQ
11
91What is photorespiration? Explain the mechanism and its significance.11
92( A cdot A-4, B-3, C-1, D-2 )
B. ( A-3, B-1, C-4, D-3 )
C. ( A-3, B-2, C-3, D-1 )
D. ( A-1, B-2, C-4, D-3 )
11
93Assertion
Cyclic pathway of photophosphorylation first appeared in some eubacterial
species.
Reason
Oxygen started accumulating in the atmosphere after the non-cyclic pathway of photosynthesis evolved.
A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
c. Assertion is correct but Reason is incorrect
D. Both Assertion and Reason are incorrect
11
94Photooxidation of water results in the
formation of
( mathbf{A} cdot mathbf{H}^{+}, mathbf{O}_{2}, ) ATP
B . H ( ^{+}, mathrm{O}_{2}, mathrm{e}^{-}, ) ATP
c. н ( ^{+}, 0_{2}, ) e ( ^{-} )
D. None of the above
11
95Study the figure which shows the effect
of light on the rate of photosynthesis
based on the graph, answer the following question:
What does ( C ) represent on the curve?
A. It represents that at higher light intensity there is no further increase in photosynthesis and other factors become limiting.
B. It represents that at lower light intensity there is no further increase in photosynthesis and other factors become limiting.
c. Maximum light intensity which can affect the rate of photosynthesis
D. None of the above
11
96The correct sequence of involvement of the following in non-cyclic electron transport
(i) PC (ii) PQ (iii) Pheo (d) Fd is
( mathbf{A} cdot ) ii, i, i, iii, iv
B. iii, ii, iv, i
c. iv , i, ii, iii
D. iii, ii, i, iv
11
97During the Z scheme, electrons excited absorption of light in PSI are transferred to the primary acceptors, and therefore must be replaced. The replacements come directly from
A. NADP
в. Атр
( c . ) PS I
D. water
11
98Which of the following is the first compound that accepts carbon dioxide during dark phase of photosynthesis?
( A ). NADP
B. RuBP
c. Ferredoxin
D. cytochrome
11
99Plants like sugarcane and sorghum have indigenously developed system to overcome the loss by photorespiration as they are ………. plants.
( mathbf{A} cdot C_{4} )
в. ( C_{3} )
c. ( C_{2} )
D. ( C_{1} )
11
100Who found that organic matter is synthesised with the help of solar energy?
A . Hill
B. Van Steil
c. Mayer
D. Bayer
11
101A potted plant was taken in order to prove a factor necessary for photosynthesis. The potted plant was kept in the dark for 24 hours. One of the leaves was covered with black paper in
the centre. The potted plant was then
placed in sunlight for a few hours.
Why was the plant placed in the dark before beginning the experiment?
11
102In photosynthesis, carbon dioxide is converted to carbohydrates. It is a
process
A . Reductive
B. Oxidative.
c. catabolic and exergonic
D. Reductive, anabolic and endergonic.
11
103Non-cyclic photophosphorylation results in production of
A. ADP
B. ATP
c. NADPH
D. ATP and NADPH
11
104State the law of limiting factor11
105Who among the following scientist was awarded the Nobel Prize in 1961 for
tracing the path of carbon in photosynthesis?
A. Huber
B. Calvin
c. Hatch
D. Rubin
11
106How many molecules of water would be consumed to support one Calvin cycle?
A. one
B. Two
c. Four
D. six
11
107What is photophosphorylation? Distinguish between cyclic and noncyclic photophosphorylation. Give schematic sketches of both.11
108To develop proton gradient in respiration the required energy come from the oxidation of
A. NADH
B. NADH and ( H_{2} O )
( c cdot O_{2} ) and ( mathrm{NADH} )
D. ( O_{2} )
11
109For ( mathrm{NADPH}+boldsymbol{H}^{+} ) formation
A . only PS lis required
B. only PS II is required
c. both PS I and PS I I are required
D. only stroma is required
11
110During photorespiration, when two ( O_{2} )
molecules react with 2 moles of RUBP
then how many ( 3-P G A ) molecules are
formed from 2 molecules of ( 2- )
phosphoglycolate
A . 2
B. 1
( c .3 )
D. 4
11
111Glycolate accumulates in chloroplast at
A. Low temparature
в. ( operatorname{Low} C O_{2} )
c. Visible light illumination
D. High ( C O_{2} )
11
112The scientist, who proved that bacteria
use ( H_{2} S ) gas and ( C O_{2} ) to synthesize
carbohydrate is
A. Van Niel
B. Ruben
c. Jean Senebier
D. Julius Robert Mayer
11
113Which of the following is not related to photorespiration?
A. Peroxisomes
B. Lysosomes
c. Mitochondria
D. chloroplasts
11
114Which of the following statement is/are
correct for photorespiration?
A. Glycerate diffuses out of peroxisome and enters chloroplast, here it is phosphorylated
B. Glyoxylate is used in the synthesis of glycine in peroxisome
C. In mitochondria when glycine is converted into serin at that time glycine first oxidized and later reduced
D. Coordinated of chloroplast, peroxisome and mitochondrion is essential in photorespiration
11
115The first stable compound formed
during the photosynthesis of ( C_{3} ) plants
is
A. Phosphoglyceric acid.
B. Starch
c. Pyruvic acid
D. Ribulose diphosphate
11
116Name the scientists who have
contributed to the following.
(i) Reverse transcription.
(ii) Photorespiration.
(iii) Principle of limiting factors.
(iv) Photolysis of water
11
117Photorespiration and photosynthesis both require
A. Organic fuel
B. Chlorophyll
c. cytochromes
D. Energy
11
118In photorespiration the number of ATP and NADPH synthesised are respectively
A . 1 and 3
B. 2 and 3
( c cdot 3 ) and 4
D. o and 0
11
119NADPH is produced in
photosynthesis during
A. Dark reaction
B. Non-cyclic photophosphorylation
C. Pseudocyclic photophosphorylation
D. Cyclic photophosphorylation
11
120Which of the following is not related to photorespiration?
A. Lysosome
B. Chloroplast
c. Peroxisome
D. Mitochondria
11
121Non-cyclic photophosphorylation produces
A. NAD
B. NADH
c. NADPH
D. NADP’
11
122Blackman’s law of limiting factor is
applied to
A. Respiration
B. Transpiration
c. Photorespiration
D. Photosynthesis
11
123Generally atmospheric ( C O_{2} ) is not limiting for hydrophytes since
A. These plants fix ( H_{2} S ) in their photosynthesis.
B. These plants obtain ( C O_{2} ) from water in the form of ( H C O_{3}^{-} )
c. Glucose is not required for their respiration.
D. All of the above
11
124This Indian scientist and his group
contributed immensely to ( C_{4} ) photosynthesis research
A. J.C. Bose
B. v.s.Rama Das
c. P.K.K. Nair
D. c.G.K Ramanujan
11
125Which one respiratory complex is coupled with ETS for ATP synthesis?
A. Complex
B. Complex III
c. complex IV
D. Complex
11
126Which of the following order is correct about the rate of photosynthesis under the light?
A. Blue yellow > orange > red
B. Blue > red > yellow > orange
c. Red > Blue > yellow > orange
D. Yellow > orange > blue > red
11
127Dark reaction of photosynthesis is called as
A. Aphotic action
B. Black action
c. Blackman’s reaction
D. None of the above
11
128The Calvin cycle proceeds in three
stages.
(1) Reduction, during which carbohydrate is formed at the expense of the photochemically made ATP and NADPH.
(2) Regeneration, during which the carbon dioxide acceptor ribulose- 1,5 biphosphate is formed
(3) Carboxylation, during which carbon dioxide combines with ribulose- -1, 5biphosphate

Identify the correct sequence from the following.
A .3,1,2
в. 3, 2,
( c cdot 1,2,3 )
D. 2,1,
E. None of the above

11
129The correct sequence of cell organelles
participating in photorespiration is
A. Chloroplast – Peroxisome – Mitochondria
B. Chloroplast – Vacuole – Peroxisome
C. Chloroplast – Golgi bodies – Mitochondria
D. Chloroplast – Rough endoplasmic reticulum Dictyosomes
11
130Calvin cycle occurs in
A. Chloroplast
B. Cytoplasm
C . Mitochondria
D. Glyoxysomes
11
131Photophosphorylation is the process in
which
A ( cdot C O_{2} ) and ( O_{2} ) unite
B. Phosphoglyceric acid is produced.
c. Aspartic acid is formed
D. Light energy is converted into chemical energy through production of ATP
11
132Non-cyclic photophosphorylation
involves
A. PS-I and PS-II
B. PS-I only
c. PS-II only
D. Stroma matrix
11
133Assertion
Photorespiration is the respiration which occurs during the daytime.
Reason Photorespiration is biochemically different from normal respiration
involving glycolate mechanism.
A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
c. Assertion is correct but Reason is incorrect
D. Assertion is incorrect but Reason is correct
11
134While conversion of phosphoglyceric acid into phosphoglyceraldehyde during photosynthesis one of the following reactions occur
A. Oxidation
B. Reduction
c. Electrolysis
D. Hydrolosis
11
135Chloroplast involvement in photosynthesis was discovered by
A. Julius von Sachs
B. Mayer
c. Ingenhousz
D. Liebig
11
136The synthesis of ATP from ADP and inorganic phosphate is a(n) reaction that is coupled to
a reaction known as
A. Endergonic; Chemiosmosis
B. Exergonic; Chemiosmosis
c. Chemical; ATP synthase
D. Chemiosmotic; ATP synthase
11
137Choose the correct answer from the
alternatives given.
The enzyme which catalyzes the
photosynthesis in ( C_{4} ) cycle is
A. PEP carboxylase
B. RuBP carboxylase
c. carbonic anhydrase
D. hexokinase
11
138The production of ATP through chemiosmosis is known to occur in
which of the following organisms?
A. All cells (prokaryotic and eukaryotic) are capable of respiration using either oxygen or other electron acceptors.
B. All cells (prokaryotic and eukaryotic), but only in the presence of oxygen.
C. Eukaryotic cells only, and only when oxygen is present.
D. All cells that possess mitochondria, and only when oxygen or other electron acceptors are present.
11
139What is photorespiration? How are
photorespiratory losses overcome by ( C_{4} )
plants ?
11
140The product of oxygenation of RUBP is
A. Phosphoglycerate
B. Phosphoglycolate
c. oxaloacetate
D. Both A and B
11
141Look at leaves of the same plant on the shady side and compare it with the
leaves on the sunny side or compare the potted plants kept in the sunlight with those in the shade. Which of them has
leaves that are darker green? Why?
11
142Chief components of Hill’s reaction used in Blackman’s reaction are
A. ATP and NAD
B. ADP and NADP
c. ATP and ( N A D P H_{2} )
D. All of the above
11
143Calculate how many ATP are
synthesised and deduct the number of ATP utilised during glycolysis.
11
144The intensity of light beyond a particular limit is unable to increase the rate of photosynthesis. The phenomena is known as
A. Light compensation point.
B. Light saturation intensity
c. Solarization
D. None of the above
11
14536. The first stable product of pho-
tosynthesis is
(1) Starch
(2) Sucrose
(3) Phosphoglyceric acid
(4) Glucose
11
146What does the given diagram represent
with respect to the various
photosynthetic processes?
A ( cdot C_{2} ) cycle
B. Cyclic photophosphorylation
c. Non-cyclic photophosphorylation
D. z-scheme of photophosphorylation
11
147Which of the following is the main
product in the photorespiration of ( boldsymbol{C}_{3} )
plants?
A. Phosphoglycerate
B. Phosphoglycolate
c. Glycerate
D. Glycolate
11
148Rearrange the following stages of Calvin cycle in correct order.
1. Reduction during which carbohydrate
is formed at the expense of the
photochemically made ATP and NADPH.
2. Regeneration, during which the carbon dioxide acceptor ribulose- 1,5
biphosphate is formed.
3. Carboxylation during which carbon dioxide combines with ribulose- 1,5
biphosphate.
( A cdot 3-rightarrow 1->2 )
B. 3->>2
c. ( 1->2-rightarrow 3 )
D. ( 2–>1->3 )
( E cdot 1-rightarrow 3-rightarrow>2 )
11
149Photorespiration occurs in
A. Mitochondria
B. Chloroplast
c. Peroxisome
D. Cytoplasm
11
150Photorespiration is a characteristic feature of plants having
( mathbf{A} cdot C_{4} ) cycle
в. ( C_{3} ) cycle
c. Aerobic respiration
D. None of the above
11
151Assertion
The proton gradient results in
movement of protons across the
membrane to stroma through the
transmembrane channel of the ( F_{0} ) of the
ATPase.
Reason
This proton gradient leads to release of
energy
A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
c. Assertion is correct but Reason is incorrect
D. Both Assertion and Reason are incorrect
11
152Which of the following is not required for the Calvin cycle to occur?
A. ATP, NADPH
B. Carbon dioxide
c. Light
D. Ribulose bisphosphate
11
153Which of the following was used during discovery of Calvin cycle?
A. Spirogyra
B. Volvox
c. chlamydomonas
D. chlorella
11
154Ribulose diphosphate carboxylase enzyme catalyzes the carboxylation
reaction between
A. Oxaloacetic acid and acetyl CoA
B. ( C O_{2} ) and ribulose 1,5 diphosphate
c. Ribulose diphosphate and phosphoglyceraldehyde
D. PGA and dihydroxy acetone phosphate
11
155What do ( C ) and ( D ) represent on the
curve?
11
156Who demonstrated the role of light in plant nutrition?
A. Von Helmont
B. Stephen Hales
c. Priestley
D. None of the above
11
157Select the correct option:
The correct sequence of flow of
electrons n the light reaction is
A. PSII, plastoquinone, cytochromes, PSI, ferredoxin
B. PSI, plastoquinone, cytochromes, PSII ferredoxin
c. PSI, ferredoxin, PSII
D. PSI, plastoquinone, cytochromes, PSII, ferredoxin
11
158One molecule of glucose in Calvin cycle
is formed from
A ( cdot 6 C O_{2}+12 A T P )
в. ( 6 C O_{2}+30 A T P+12 N A D P H )
c. ( 6 C O_{2}+18 A T P+12 N A D P H )
D. ( 6 C O_{2}+18 A T P+30 N A D P H )
11
159The given diagram illustrate
Blackman’s law of limiting factor. Which of the factor can be considered
as a limiting factor in the above
diagram?
Fig. 11.24
Ilustrate Blackman’s law of limiting factors
A. carbon dioxid
B. Temperature
c. Intensity of light
D. All of the above
11
160The increase in the ( ldots ). factor greatly
the rate of photosynthesis.
A. Slowest, increases
B. Slowest, decreases
c. fastest, increases
D. None of the above
11
161Agranal chloroplasts occur in
A. Succulent plants.
B. ( C_{3} ) plants.
c. ( C_{4} ) plants.
D. Hydrophytes
11
162Which of the following is required both during photosynthesis and respiration?
A. Phytochrome
B. Cytochrome
c. chlorophyll
D. Glucose
11
163Assertion
Except sciophyte and plants of dense forest, light is rarely a limiting factor in
nature.
Reason
Light saturation occurs at 10 percent of full summer sunlight.
A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
c. Assertion is correct but Reason is incorrect
D. Both Assertion and Reason are incorrect
11
164Detailed study of pigment systems was carried out by
A. Robert Hill
B. H. P. Nanda
c. Govindjee
D. Emmerson
11
165What are phytoplankton?11
166Scientist who discovered the role of
light in photosynthesis was
A. Sachs
B. Jan Ingenhousz
c. Senebier
D. Priestley
11
167In nature, the photosynthesis should proceed up to the limit of
A. Light
B. Temperature
( c cdot C O_{2} )
D. Moisture and wind
11
168Photorespiration is favoured by
A . Low light and high ( O_{2} )
B. Low ( O_{2} ) and high ( C O_{2} )
C. Low temperature and high ( O_{2} )
D. High ( O_{2} ) and low ( C O_{2} )
11
169In Kranz anatomy, the bundle sheath
cells have
A. Thin walls, many intercellular space and no chloroplast
B. Thick walls, no intercellular spaces and large number of chloroplasts
c. Thin walls, no intercellular spaces and several chloroplasts
D. Thick walls, many intercellular space and few chloroplasts
11
170What is meant by photophosphorylation ? Discuss the cyclic
photophosphorylation.
11
171Product of photorespiration is
A. Phosphoglycerate
B. Erythrose 4-phosphate
c. Dihydroxy acetone 3-phosphate
D. All of the above
11
172In ( C_{4} ) pathway carboxylation occurs
twice. Discuss.
11
173( ln C_{3} ) plants, the first stable product of photosynthesis during the dark reaction is
A. Malic acid
B. Oxaloacetic acid
c. 3- Phosphoglyceric acid
D. Phosphoglyceraldehyde
11
174Which one of the following would not be limiting factor in photosynthesis?
( A cdot O_{2} )
в. ( C O_{2} )
c. chlorophyll
D. Light
11
175Whether Photorespiration is present at low light intensities.11
176Reduction process of ( C O_{2} ) and ATP formation in plants has relationship. In this rection, ATP is
A. Formed
B. Utilised
c. Not utilised
D. None of the above
11
177Photo-oxidation of water in
photosynthesis is in association of
A. Cytochrome ( b_{6} )
B. Pigment system- –
c. Pigment system- – I
D. Plastocyanin
11
178What is called as Warburgs effect
on photosynthesis?
A . Low rate of process due to ( O_{2} ) supply
B. Low rate of process due to ( C O_{2} ) supply
c. Both A and B
D. None of the above
11
179The mechanism of ATP formation both
in chloroplast and mitochondria is explained by
A. Relay pump theory of Godlewski
B. Cholodny-Went’s model
c. chemiosmotic theory
D. Munch’s pressure/ mass flow model
11
180What is the use of ATP binding site?11
181Under condition of constant
¡Illumination, the compensation period
for a whole aquarium would be of
infinite length when
A. The biomass of animals equals the biomass of plants.
B. The respiratory exchanges of the animals are equal to the photosynthesis exchanges of the plants.
C. The oxygen intake of the animals equal of oxygen outputs of photosynthesis
D. The carbon dioxide output of the animals and plants is equal to the photosynthetic intake of the plants.
11
182Given figure depicts the light
harvesting complex (LHC) of
photosystem I (PSI). Select the correct identification for ( mathbf{A}, mathbf{B} )
C and ( D )
A. A-molecules; B- Antenna molecule; C- ( P_{680} ; ) D- Primary
( e^{-} ) acceptor.
B. A-Antenna molecules; B-Core molecule; ( P_{700} ; ) D-
Primary ( e^{-} ) acceptor.
C. A-Antenna molecules; B-Core molecule; ( P_{700} ; ) D-
Plastocyanin
D. A-Core molecules; B- Reaction centre; ( P_{680} ; ) D-
Plastocyanin
11
183How many times the calvin cycle occur to produce two molecules of sucrose
( mathbf{A} cdot mathbf{6} )
B. 12
c. 18
D. 24
11
184When ( N a H C O_{3} ) is added in small
quantity in an experiment showing photosynthesis, what will be the effect
on it?
A. Rate will be lowered
B. Rate will be increased
c. Rate will be normal
D. Process will stop
11
185Photorespiration takes place only in
A. Lysosomes of plant cell
B. Yellow parts of the plant
c. Mitochondria of plant cell
D. None of the above
11
186A plant in your garden avoids photorespiratory losses, has improved water use efficiency, shows high rate of photosynthesis at high temperature and has improved efficiency of nitrogen utilisation. In which of the following physiological groups would you assign this plant?
A. ( C_{3} )
в. ( C_{4} )
c. сАм
D. Nitrogen fixer
11
187Assertion
Presence of photorespiration is considered as a wasteful and energy
consuming process in crop plants, ultimately leads to reduction in yield.
Reason

During ( C_{3} ) synthesis upto ( 50 % C O_{2} ) fixed may have to pass through photosynthesis process to form carbohydrate such as sucrose.
A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.
c. Assertion is correct but Reason is incorrect.
D. Both Assertion and Reason are incorrect.

11
188Which of the following statement
regarding ( C_{4} ) plants is false?
A. The primary ( C O_{2} ) acceptor is a 5 carbon molecule.
B. The initial carboxylation reaction occurs in mesophyll.
C . The leaves that fix ( C O_{2} ) have two cell types.
D. The chloroplasts are dimorphic.
E. The Calvin pathway does not take place in the mesophyll cells but does so only in the bundle sheath cells.
11
189Chemiosmosis is a universal
mechanism by which organisms
harvest and store energy.
Which of the following best describes
the process?
A. It is the process of whereby a proton gradient drives an energy-requiring reaction.
B. It is the process used to move protons up a concentration gradient for subsequent production of ATP
C. It is the process that uses pumps to drive chemicals across the membrane
D. It is the movement of specific chemicals against its gradient coupled to the flow of protons down its concentration gradient.
11
190Assertion
The young stern of Funaria is
photosynthetic
Reason
It contain hydroids
A. If both the assertion and the reason are true and the
reason is a correct explanation of the assertion
B. If both the assertion and reason are true but the
reason is not a correct explanation of the assertion
C. If the assertion is true but the reason is false
D. If both the assertion and reason are false
11
191ADP ( longrightarrow ) ATP reaction occurs when two
protons ( left(boldsymbol{H}^{+}right) ) are passed from
A. Thylakoid to cytosol
B. Thylakoid to lumen
c. Lumen of thylakoid to stroma
D. Stroma to thylakoid lumen.
11
192Write the full form of G-6-PD11
193ATP was discovered by
A. Blackman
B. Bowman
C. Lipmann
D. Karl Lohmann
11
194Assertion
Protons or hydrogen ions produced by photolysis of water accumulate in the lumen of thylakoids.
Reason
Photolysis of water takes place in inner membrane of thylakoid.
A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
c. Assertion is correct but Reason is incorrect
D. Both Assertion and Reason are incorrect
11
195Which of the following inhibits ( 0_{2} ) release in light phase?
A. PMAA
B. Zeatin
c. DCMU
D. None of the above
11
196Blackman’s law of limiting factor is applied to
A. Growth
B. Respiration
c. Transpiration
D. Photosynthesis
11
197Energy required to develop proton
gradient during respiration comes from
A. Oxidation process of ( N A D H )
B. Oxidation-reduction process of ( C O_{2} ) and ( N A D H ) respectively
C. From heat energy developed during respiration
D. Oxidation-reduction process of ( N A D P H ) and ( O_{2} ) respectively
11
198Electrons lost by PS II are regained from
( A cdot O_{2} )
в. ( C O_{2} )
( mathrm{c} cdot mathrm{H}_{2} mathrm{O} )
D. None of the above
11
199Van Helmont concluded that plants get their food from
A. Air
B. water
c. Humus
D. Air and ( H_{2} O )
11
200In photosynthesis, the energy is
transferred in
A. One energy step
B. Small energy steps
c. Large energy steps
D. All of the above
11
201During photorespiration oxygen consuming reaction(s) occur in
A. Stroma of chloroplasts & peroxisomes
B. Stroma of Chloroplasts
C. Grana of chloroplast and peroxisomes
D. Stroma of chloroplasts and mitochondria
11
202Which cell organelle is not related with photorespiration?
A. Mitochondria
B. Chloroplast
c. Glyoxysome
D. Peroxysome
11
203If the ( C O_{2} ) content of the atmosphere is
as high as 300 ppm
A. All plants would be killed.
B. The plants would not grow properly.
C. Plants after growing for sometime gets killed.
D. Plants would thrive well
11
204The first stable product of
photosynthesis in ( C_{3} ) plants is
A. 3- phosphoglyceric acid
B. Dihydroxyacetone phosphate
c. Fructose- – 6 – diphosphate
D. Ribulose-1, 5- diphosphate
11
205Assertion
( ln C_{4} ) plants, photo respiration does not
occur
Reason
( C_{4} ) plants have a mechanism that
increases the concentration of ( C O_{2} ) at
the enzyme site.
A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
c. Assertion is correct but Reason is incorrect
D. Both Assertion and Reason are incorrect
11
206The percentage of sunlight utilized for photosynthesis by higher plants is
A . ( 100 % )
B. ( 110 % )
c. ( 50 % )
D. 1 – 2 %
11
207Steps in non-cyclic photophosphorylation include passage of electrons along
( A cdot F R S longrightarrow F D longrightarrow C y t b_{6} longrightarrow ) Cyt ( f longrightarrow P C longrightarrow ) Chl a
в. сhl a ( rightarrow ) cyt ( b_{6} longrightarrow ) Cyt ( f longrightarrow mathrm{PC} longrightarrow mathrm{PS} ) । ( longrightarrow mathrm{FRS} longrightarrow )
( F D )
c. chl a ( rightarrow mathrm{PQ} longrightarrow mathrm{cyt} b_{6} longrightarrow mathrm{cyt} mathrm{f} longrightarrow mathrm{PC} rightarrow mathrm{PS} 1 rightarrow )
FRS ( rightarrow ) FD
D. PQ ( rightarrow ) Cyt ( b_{6} rightarrow ) Cyt ( f longrightarrow P C longrightarrow P S 1 longrightarrow F R S longrightarrow F D )
11
208In Blackmann’s Law of limiting Factors the rate of photosynthesis continues to increase with the successive increase
in the amounts of
A. Carbon dioxide, light, temperature
B. Temperature, light, carbon dioxide
c. Light, temperature, carbon dioxide
D. Light, carbon dioxide, temperature
11
209In the following dark reaction of photosynthesis,
( 6 C O_{2}+6 H_{2} O+A+12 N A D P H+H )
A and B stand for
A . 18 ADP, 18 ATP
B. 12 ATP, 18 ATP
c. 18 ATP, 18 ADP
D. 12 АтР, 12 АDP
11
210What will be the effect, when very high intensity of light is supplied to a photosynthesis system?
A. Process will increase
B. Process will decrease
c. Process will stop due to solarization
D. None of the above
11
211The first important biological investigation, which led to the conclusion that plant makes its
substance from water and not from soil
carried out by
A. Lamarck
B. De Vries
c. van Helmont
D. Darwin
11
212In photosynthetic electron transport system, Mn ions are associated with
A. ( C F_{0}-C F_{1} ) complex
B. ( mathrm{cyt} b_{6}- ) Cyt f complex
c. oxygen evolving complex
D. Plastoquinone.
11
213Action spectrum of photosynthesis was discovered in 1883 by
A. Engelmann
B. Calvin
c. Arnon
D. Hill
11
214The concept that light energy is converted to chemical energy in photosynthesis was given by
A. Priestley
B. Meyer
c. stephen Hales
D. Helmont
11
215Assertion
The external factors that affect
photosynthesis are number, size, age and orientation of leaves, mesophyll cells and chloroplasts and the amount of chlorophyll.
Reason
The internal factors that affect
photosynthesis are availability of
sunlight, temperature ( , C O_{2} ) concentration and water
A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
c. Assertion is correct but Reason is incorrect
D. Both Assertion and Reason are incorrect
11
216How many molecules of ATP and NADPH
are require in formation of two molecules of glucose? How many Calvin cycles are required?
A. 36 ATP, 24 NADPH, 12 Calvin cycles
B. 18 ATP, 12 NADPH, 6 Calvin cycles
c. 36 ATP, 24 NADPH, 6 Calvin cycles
D. 24 ATP, 36 NADPH, 12 Calvin cycles
11
217Which enzyme fixes ( C O_{2} ) in Calvin
cycle?
A. RUBP carboxylase
B. PEP carboxylase
c. Carbonic anhydrase
D. Hexokinase
11
21824. Statement : Cactus plants are
fleshy but need least water.
Conclusions :
I. All fleshy plants are cactus.
II. Cactus plants need least water.
(1) Neither I nor II follows
(2) Only II follows
(3) Both I and II follows
(4) Only I follows
11
219Peroxisomes are related in
A. Photosynthesis
B. Photorespiration
C . Respiration
D. None of the above
11
220( N H_{3} ) releases during which of the following process?
A. Photorespiration
B. Dark respiration
c. сАм
D. All of the above
11
221Explain the Hatch-Slack pathway.11
222Radioactive isotope used by Calvin to elucidate Calvin cycle was
( mathbf{A} cdot P^{12} )
B ( cdot C^{14} )
( c cdot S^{3} )
D. ( O^{13} )
11
223How many turns of Calvin cycle would
generate one molecule of glucose/hexose?
A. One cycle
B. Three cycles
c. six cycles
D. Twelve cycles
11
224( M g^{2+} ) and ( C l^{-} ) are required during
transfer of electron from
A ( cdot O H^{-} ) to ( C h l ) orophyll ( -a_{683} )
B. ( O H^{-} ) to ( P_{700} )
c. ( F D ) to ( F R S )
D. Cytochrome ( -b ) to cytochrome ( -f )
11
225Sugarcane and corn are one of the most
efficient plants in trapping light energy because
A. They have ( C_{4} ) acid cycle
B. They do not involve photorespiration
c. They perform calvin cycle
D. All of the above
11
226Thylakoid name was given by
A. Arnon
B. Park and Biggins
c. Park and Frotan
D. Menke
11
227Which one of the following is limiting
rate of photosynthesis in nature
A. Light
в. ( C O_{2} )
( c cdot O_{2} )
D. chlorophyll
11
228R. Hill used which of the following dye for his famous Hill-reaction?
A. Dichlorophenolindophenol (DCPIP)
B. Sulphur green
c. Methylene blue
D. Eosine
11
229During photorespiration, in which of the following NAD is reduced?
A. Mitochondria and peroxisome
B. Chloroplast and peroxisome
c. chloroplast and mitochondria
D. Mitochondria
11
230What is the site of formation of
glycoxylate from glycolate?
11
231Number of ATP molecules required for regeneration phase of RuBP during synthesis of 1 glucose molecule is
( A cdot 6 )
B. 12
( c cdot 18 )
D. 30
11
232Photo-respiratory reactions are
operated in
A. Chloroplasts, ribosomes and peroxisomes
B. Chloroplasts, mitochondria and peroxisomes
C. Mitochondria, peroxisomes and lysosomes
D. Mitochondria, chloroplasts and ribosomes
11
233Match the name of the scientists with
their important contributions given under. Choose the answer which gives
correct combination.
( A cdot A-4, B-1, C-3, D-2 )
B. ( A-1, B-4, C-2, D-3 )
c. ( A-2, B-1, C-3, D-4 )
D. ( A-4, B-3, C-2, D-1 )
E . ( A-3, B-2, C-1, D )
11
234State whether the following statement
is true or false:

Plants do not respire whereas animals
do.
A. True
B. False

11
235Find out the correct combinations
concerning components of photosynthetic electron transport, location in relation to thylakoid and action.
I. OEC – lumen side – water reduction.
II. Plastocyanin – lumen side – electron transfer from cyt f to PSI
III. Ferrodoxin – stroma side – reduction
of ( N A D^{+} ) to ( N A D H )
IV. Cytochrome complex – integral
protein – transfer electrons from ( boldsymbol{P} boldsymbol{Q} boldsymbol{H}_{2} )
to PC.
Choose the correct answer.
A. Il and IV
B. I and III
c. Il and III
D. I and IV
11
236Oxysomes were discovered by
A. Palade
B. Benda
c. Fernandes-Moran
D. Luch and Rich
11
237What is ( C_{2} ) Cycle?
A. Glycolate cycle
B. Calvin cycle
c. Krebs cycle
D. TCA cycle
11
238Which of the following cell organelles is associated with photorespiration?
A. Mitochondria
B. Peroxysome
c. chloroplast
D. All of the above
11
239During chemiosmotic synthesis of ATP,
protons diffuse through ( C F_{0} ) channels
that activates ATPase enzyme. As a result, one molecule of ATP is formed
when ( _{text {一一一一一一一一 }} ) passes through
ATPase.
( mathbf{A} cdot 4 H^{+} )
в. ( H^{+} )
( mathbf{c} cdot 2 H^{+} )
D. ( 6 H^{+} )
11
240Name the three organelles involved in
photorespiration.
11
241Which is not an electron carrier?
A. ( operatorname{col} )
B. cyt
c. cyt a
D. ( H_{2} O )
11
242What is the first stable intermediate
product of photosynthesis?
A. Glucose
B. Formaldehyde
c. Phosphoglyceric acid
D. PGAL
11
243Match the sites in list I with the
processes in list II and choose the
correct combination from the options.
( A cdot A-4, B-3, C-2, D-1 )
B. ( A-1, B-2, C-4, D-3 )
c. ( A-2, B-3, C-4, D-1 )
D. ( A-3, B-4, C-1, D-2 )
11
244Respiration initiated in chloroplast and occurs in light is called as
A. Aerobic respiration
B. Anaerobic respiration
c. Photorespiration
D. Fermentation
11
245Choose the correct answer from the
alternatives given Which of the following is most closely associated with the Calvin cycle?
A. ATP production
B. Oxygen production
c. Carbon dioxide fixation
D. Carbon dioxide production
11
246The sequence of cell organelles during
photorespiration is
A. Chloroplast – Golgi bodies – Mitochondria
B. Chloroplast – Rough endoplasmic reticulum Dictyosomes
C. Chloroplast-Peroxisomes-Mitochondria
D. Chloroplast – Vacuole – Peroxisome
11
247Photosynthetic Active Radiation (PAR) has which of the following range of wavelengths?
A. ( 400-700 mathrm{nm} )
B. 450-920 nm
c. ( 340-450 mathrm{nm} )
D. 500-600 nm
11
248If the ( C O_{2} ) content of the atmosphere is
as high as 300 parts per million
A. All plants would be killed
B. The plants would not grow properly
C. Plants would grow for some time and then die
D. The plants would thrive well
11
249Reducing power generated during light reaction is used during formation of
A. 3-phosphoglyceraldehyde from RuBP
B. Sucrose from triose phosphate
c. Glyceraldehyde 3-phosphate from 3-phosphoglycerate
D. RuBP from triose phosphate
11
250The term dephlogisticated air was given by
A. Von Mayer
B. Van Helmont
c. warburg
D. Priestely
11
251Chemiosmotic mechanism of ATP
synthesis was proposed by
A. Warburg
B. Dickens
c. Krebs
D. P. Mitchell
11
252A cell can carry out its constant
and intensive metabolic activities with
relatively small amounts of such vital
components as ATP, ( N A D^{+}, ) coenzyme
A, etc. because it can
A. rapidly recycle these compounds
B. bypass reactions that require these compounds
c. incur an oxygen debt until these compounds become available
D. utilize substitute molecules in place of these compounds
11
253Which is called as Warburg’s effect on photosynthesis?
A . Low rate of the process due to ( O_{2} ) supply
B. Low rate of the process due to ( C O_{2} ) supply
c. Both A and B
D. None of the above
11
254In electron transport system, the last electron acceptor of
photophosphorylation is
( mathbf{A} cdot N A D P H )
B. ( N A D P^{+} )
c. Atomic oxygen
D. chlorophyll a
11
255The energy stored in one molecule of
NADPH and one molecule of ATP are
and ( ldots ldots . ) respectively.
A. 52 kcal, 7 kcal
B. 520 kcal, 70 kcal
c. 150 kcal, 22 kcal
D. 650 kcal, 90 kcal
11
256( ln C_{4} ) plant ( R u B i s C O ) activate during:
A . Day
B. Night
c. Midnight
D. Remain activated all time
11
257State whether the following statements are true or false.

ATP is a protein that supplies energy to
the cell.
A. True
B. False

11
258Which one of the following elements is required for photosynthetic oxygen evolution?
A. copper
B. Iron
c. Manganese
D. zinç
11
259The rate of photosynthesis decreases if the wavelength of visible light exceeds ( 680 mathrm{nm} . ) This was shown by which scientist and what is it’s reason?
A. Black man – Law of limiting factor
B. Calvin and Benson – Photooxidation
c. Emerson and Arnold – Red drop
D. Ruben and Kamen – Photolysis
11
260The substrate for photorespiration is which of the following?
A. Serine
B. Glycolate
c. Indole acetic acid
D. Malic acid
11
261Statement a. Photorespiration
decreases photosynthetic output.
Statement b. In photorespiratory pathway, neither ATP nor NADPH is
produced
A. Both the statements a and b are correct.
B. Both the statements a and b are wrong
C. Statement a is correct and statement b is wrong.
D. Statement b is correct and statement a is wrong.
11
262In case of ( C_{4} ) plants, the acceptor of
( C O_{2} ) is
A. Phosphoglyceraldehyde
B. Ribulose monophosphate.
c. Phosphoenolpyruvate.
D. Ribulose diphosphate
11
263Action spectrum of photosynthesis was discovered by
A. Calvin
B. Engelman
c. Blackman
D. Hill
11
264In Hatch and Slack pathway the
A. Chloroplasts are of same type
B. Occurs in Kranz anatomy, where mesophyll cells have small chloroplasts whereas bundle sheath cells have agranal chloroplasts
C. Occurs in Kranz anatomy, where mesophyll cells have small chloroplasts whereas bundle sheath cells have larger chloroplasts
D. Kranz anatomy, where mesophyll cells are diffused
11
265What will be the effect of intermittent
light on photosynthesis?
A. It will increase
B. It will decrease
c. will not be effected
D. Process will stop
11
266In photosrespiration, glycine passes
from
A. Chloroplast to peroxisome
B. Chloroplast to mitochondrion
c. Peroxisome to mitochondrion
D. Mitochondrion to peroxisome
11
267Energy released during movement of electrons through the photosystems in photosynthesis is used to drive protons across the membrane against concentration gradient. As a result the protons accumulate in
A. thylakoid lumen
B. stroma of chloroplast
c. matrix of mitochondrion
D. none of these
11
268Most of the plants contain a green colouring pigment which is responsible for photosynthesis. This pigment was named chlorophyll by
A. Melvin Calvin
B. Jean Senebier
c. Julius Robert Mayer
D. Pelletier and Caventou
11
269When a photosynthetic plant is transferred to an atmosphere of
enriched ( O_{2} ) its rate of
A. Photosynthesis would increase.
B. Photosynthesis would decrease.
c. Respiration would decrease.
D. osmosis would increase.
11
270Aerosols inhibits photosynthesis by
A. consuming ( O_{2} ) from air
B. Competing with ( C O_{2} )
c. Blocking stomata by enhancing particulate matter settlement on the leaves.
D. Decreasing air pollution and reducing ( C O_{2} )
11
271Photosynthesis (nourishment in light) was discovered by
A. Stephan Hales
B. Priestley
c. Ingenhousz
D. Van Mayer
11
272Assertion
The atmospheric concentration of ( boldsymbol{C O}_{2} )
at which photosynthesis just compensates for respiration is referred
to as ( C O_{2} ) compensation point.
Reason
The ( C O_{2} ) compensation point is reached
when the amount of ( C O_{2} ) uptake is less
than that generated through
respiration, because the level of ( C O_{2} ) in
the atmosphere is more than that
required for achieving ( C O_{2} )
compensation point.
A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.
c. Assertion is correct but Reason is incorrect
D. Assertion is incorrect but Reason is correct.
11
273Which one is false about kranz
anatomy?
A. Bundle sheath have large chloroplast and less developed grana.
B. Mesophyll cells have large chloroplasts.
C. It is found in atriplex, sugarcane, maize.
D. Plant having it have better photosynthesizing power than ( c_{3} ) plants.
11
27434. Which of the following types
of light are strongly aborted by
plants ?
(1) violet and orange
(2) blue and red
(3) Indigo and yellow
(4) yellow and violet
11
275Which scientists are related with light
reaction and what is its site?
A. Arnon and Hill, grana
B. Ruben and Kamen, Stroma
C. Willstatter, Stoll, inner membrane of chloroplast
D. Calvin and Benson, outer membrane of choloplast
11
276Statement A: Photorespiration decreases photosynthesis output.
Statement B: In photorespiratory pathway, neither ATP nor NADPH is
produced.
A. Both the statements ( A ) and ( B ) are correct.
B. Both the statements A and B are wrong.
C. Statement A is correct and Statement B is wrong.
D. Statement B is correct and statement A is wrong.
11
27741. Which of the following plant pig-
ments absorbs in red and far-red
region of light?
(1) Carotenoide
(2) Chlorophyll
(3) Phytochrome
(4) Cryptochrome
11
278The process of photosynthetic photophosphorylation was described by
A. Blackman
в. ні||
c. Arnon
D. Benson
11
279Light energy is not used directly or indirectly in which of the following option?
A. Splitting of ( H_{2} O )
B. To develop proton gradient during photophosphorylation
c. ( C O_{2} ) reduction in dark reaction
D. To develop proton gradient during oxidative photophosphorylation
11
280Photorespiration requires this activity by an enzyme
A. Hydrolase
B. Oxygenase
c. carboxylase
D. ATPase
11
281During photorespiration which compounds are formed having ( 2 C ) and
( 3 mathrm{C} ) respectively in peroxisome?
A. Phosphoglycerate, glycolate
B. Glycine, glycerate
c. serine, glycine
D. Glycolate, glycine
11
282What is the product of oxygenase acitivity of Rubisco?
A. Phosphoglycerate
B. Phosphoglycolate
c. Both A and B
D. Phosphoglyceraldehyde
11
283Write three differences between ( C_{3} ) and
( C_{4} ) cycles.
11
284The reaction that is responsible for the
primary fixation of ( C O_{2} ) is catalysed by
A. ( R u B P ) carboxylase
B. ( P E P ) carboxylase
c. ( R u B P ) carboxylase and ( P E P ) carboxylase
D. ( P G A ) synthase
11
285The first stable product of Calvin cycle
is
A. 3- phosphoglycerate.
B. 1,3- biphosphoglycerate.
c. Glyceraldehyde-3- phosphate.
D. Ribulose-5- phosphate.
11
286Identify the correct statement(s) in
relation to ( C_{4} ) photosynthesis.
A. Kranz anatomy is an essential feature for ( C_{4} ) plants
B. ( C_{4} ) plants have higher water use efficiency than ( C_{3} ) plants
C. Photorespiration can be minimized when ( C_{4} ) pathway is in operation
D. All of the above
11
287In cyclic photophosphorylation, which one of the following is formed?
A. ATP
B. NADP and ATP
( mathrm{c} cdot mathrm{NADH}_{2} ) and ( O_{2} )
D. NADPH ( _{2} ), ATP and ( O_{2} )
11
288Petiole of Australian Acacia helps in?
A. Respiration
B. Photosynthesis
c. Transpiration
D. Secretion
11
289toppr loGıl
Q Type your question_
11
cycle at stage ( –A_{-}- )
(ii) Hydrogen from reduced hydrogen
acceptor is used at stage ( –B_{-} )
(iii) Energy from ATP is used to drive
stage ( –mathrm{C}_{-} )
(iv) The substance formed at position ( mathbf{Y} ) Y
is ( -n )
(v) If one molecule of substance Y is
released per cycle, the cycle must turn
( mathrm{E}_{–} ) times for one molecule of
sucrose ( left(C_{12} H_{22} O_{11}right) ) to be built up at
position Z.
( mathbf{A} cdot A-4 ; B-2 ; C-2 ) and ( 3 ; D-3 ) carbon sugar; ( E-4 )
B . ( A-3 ; B-3 ; C-1 ) and ( 2 ; D- ) pyruvicacid; ( E-2 )
( mathbf{c} cdot A-2 ; B-4 ; C-3 ) and ( 4 ; D-g l u operatorname{cose}-1- )
phosphate, ( E-8 )
D. ( A-1 ; B-1 ; C-2 ) and ( 4, D- ) citricacid ( E-12 )
11
290The microelement which is an integral part of electron carrier that transfers
electrons from cyt b-f complex to PS I is also a component of
A. Nitrate reductase
B. Cytochrome c-oxidase
c. IAA-oxidase
D. Dinitrogenase
11
291( N a^{+}, K^{+} ) pump is found in membranes of many cells, like nerve cells. It work against electro chemical gradient and involve an integral protein ATP. For each molecule of ATP used
A. 3 ions of ( N a^{+} ) pumped out and ( 2 K^{+} ) are taken in
B. 3 ions of ( N a^{+} ) are taken in and 2 ( K^{+} ) are pumped out.
C. 2 ions of ( N a^{+} ) are thrown out and ( 3 K^{+} ) are absorbed.
D. 3 ions of ( K^{+} ) are absorbed and 3 ( N a^{+} ) are pumped out
11
292Organelles having enzymes involved in photorespiration are
A. Mitochondria, chloroplasts and ribosomes
B. Mitochondria, peroxisomes and chloroplasts
c. Mitochondria, nucleus and ribosomes
D. Mitochondria, peroxisomes and glyoxysomes
11
293ETC of photosynthesis process is
A. Bound to thylakoid membrane
B. Present in stroma
C. Bound to outer chloroplast membrane
D. Dispersed in cytosol
11
294Photorespiration is also called as
A ( cdot C_{2} ) cycle
B. ( C_{3} ) cycle
( mathbf{c} cdot C_{4} ) cycle
D. None of the above
11
295Calvin cycle is
A. Dependent on light
B. Not dependent on light
C. All of the above
D. None of the above
11
296Present atmospheric ( boldsymbol{C O}_{2} )
concentration is not limiting factor for
( C_{4} ) plants as ( C_{4} ) plants
A. Posses PEPcase as primary carboxylase enzyme
B. Primary carboxylation reaction product is a four carbon acid
C. No oxygenation of RUBP due to kranz anatomy
D. Primary carboxylation reaction occurs in mesophyll cells
11
297In Kranz anatomy, the bundle sheath
cells have
A. Thin walls, no intercellular spaces and several mitochondria
B. Thin walls, many intercellular spaces and few chloroplast
c. Thin walls, many intercellular spaces and no chloroplast
D. Thik walls, no intercellular spaces and large number of chloroplast
11
298Which of the following is correct in
regards to photorespiration?
A. In mitochondria, serine in converted into hydroxypyruvate
B. In mitochondria, two glycine molecules unite to form serine
C. In mitochondria, glycolate is oxidised to form glyoxylate
D. In peroxisomes, three molecules of glycine unite to form serine
11
299The substrate for photorespiration is
A. Glycolate.
B. Glucose.
c. Lipid.
D. sucrose.
11
300What does not occur in
photorespiration?
A. Utilization of ( O_{2} )
B. Production of ( C O_{2} )
c. synthesis of ATP
D. All of the above
11
301Carbon dioxide acceptor in ( C_{3} ) plants is
A. PEP
B. RuBP.
c. PGA
D. NADP.
11
302Study the graph which shows results of
three different experiments ( P, Q ) and ( R )
What does this experiment tell you
about the factors limiting the rate of
photosynthesis in the regions ( A-B ) and
B-C of curve R?
A. A-B was light intensity and B- C was some other factor (cannot find from available data)
B. A-B was temperature and B- C was light intensity
C. A-B was some other factor (cannot find from available data) and B- C was light intensity
D. None of the above
11
303Photorespiration is favoured by
A. Low temperatures
B. Low light intensity
( mathrm{c} cdot mathrm{High} mathrm{O}_{2} ) and ( operatorname{low} mathrm{CO}_{2} )
D. Low ( O_{2} ) and high ( C O_{2} )
11
304Chloroplast dimorphism is a characteristic feature of
A. Plants with Calvin cycle
B. ( C_{4} ) plants
c. All plants
D. only in algae
11
305In photosynthesis, for the fixation of one mole of glucose, the number of ATP and
NADPH ( _{2} ) required is
( A cdot 12 ) and 18
B. 18 and 12 .
c. 6 and 12 .
D. 18 and 18 .
11
306During photosynthesis, for the synthesis of one mole of glucose, the
number of ATP and NADPH ( _{2} ) required are
… and dots…. respectively.
A. 12,18
B. 18,12
( c cdot 6,12 )
D. 18,18
11
307Photorespiration is a characteristic of
A. CAM plants
B. ( C_{3} ) plants
C ( . C_{4} ) plants
D. None of the above
11
308Decreased rate of photosynthesis at
high concentration of ( boldsymbol{O}_{2} ) is referred to a
A. Pasteur effect
B. Emerson effect
c. warburg effect
D. Richmond Lang effect
11
309In photorespiration, peroxisome helps
in
A. Synthesis of PGA
B. Reduction of glyoxylate
c. oxidation of glycolate
D. oxygenation of glycolate
11
310Compensation point is
A. Where there is neither photosynthesis nor respiration
B. When rate of photosynthesis is equal to the rate of respiration
C. When entire food synthesized into photosynthesis remain utilized
D. When there is enough water just to meet the requirement of plant
11
311Action spectrum of photosynthesis was first studied by
A. Blackman
B. Van Mayer
c. Engelmann
D. Boussingault
11
312During photosynthesis
( A cdot O_{2} ) evolved comes from ( C O_{2} )
B. ATP is formed
C. ATP is not formed
D. Water is required as medium but it does not take part in photosynthesis
11
313Photorespiration involves oxidation of
A. Chlorophyll a
B. PGAA
c. RuBP
D. Both B and C
11
314A plant is exposed to an optimum amount of light intensity, with a limited
supply of ( mathrm{CO}_{2} ). As the carbon dioxide concentration increases
A. The rate of photosynthesis increases
B. The rate of photosynthesis decreases
c. The rate of photosynthesis remains constant
D. None of the above
11
315Coupling factor- F occurs over
A. Ribosome
B. Stroma
c. Matrix
D. Thylakoids
11
316How many rounds of Calvin cycle are required to form one hexose molecule?
A .2
B. 6
( c cdot 4 )
( D )
11
317Law of limiting factor was proposed by
( A ). Robot Hill
B. Kolvin
c. Blackmann
D. Arnon
11
318The isotope of carbon used extensively
for studies in photosynthesis is
( mathbf{A} cdot^{13} C )
B. ( ^{14} C )
( mathbf{c} cdot^{15} C )
D. ( ^{16} C ).
11
319Photorespiratory reactions are operated
in the
A. Chloroplasts, ribosomes and peroxisomes.
B. Chloroplasts, mitochondria and peroxisomes.
C. Mitochondria, preoxisomes and lysosomes.
D. Mitochondria, chloroplasts and ribosomes.
11
320Photosynthetic yield is reduced due to
A. Plasmolysis of cell
B. Glycolysis of glucose
c. Photolysis of water
D. Photorespiration
11
321Write notes on
(a) Compensation point
(b) The blackman’s principle of limiting factors
(c) Rubisco
(d) Photorespiration and aerobic respiration
(e) Light reaction and dark reaction
(f) ( C_{3} ) and ( C_{4} ) plants
11
322Who is called as ‘father of Indian plant
physiology’?
A. J. C. Bose
B. Calvin
c. R. Mishra
D. K. K. Nanda
11
323( C O_{2} ) acceptor in ( C_{3} ) plants is
A. Xylulose-5-phosphate
B. 3-phosphoglyceric acid
c. Ribulose 1,5 -biphosphate
D. Phosphoenol pyruvic acid
11
324In fluorescence experiment, which of the light is used?
A . Red
B. Visible
c. uv
D. Infrared
11
325Assertion
Each molecule of NADPH and two ATP
are required for the fixation of one
molecule of ( boldsymbol{C O}_{2} )
Reason
Three molecule of NADPH and two ATP
are required the for fixation of one
molecule of ( boldsymbol{C O}_{2} )
A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
C. Assertion is correct but Reason is incorrect
D. Both Assertion and Reason are incorrect
11
326Who proposed the cycle of events
leading to the fixation of ( C O_{2} ) in mesophyll and its reduction in bundle sheath?
A. Emerson
B. Melvin Calvin
c. Hatch and Slack
D. Hill and Bendall
11
327Which of the following are related with photorespiration?
A. spherosome
B. Lysosomes
c. Glyoxysomes
D. Peroximomes
11
328The enzyme responsible for primary
carboxylation in ( C_{3} ) plants is
A. Hexokinase
B. Succinic dehydrogenase
c. Pyruvate carboxylase
D. RuBP carboxylase oxygenase
11
329Root pressure theory was supported by
A. Dixon
B. Stephen Hales
c. Levitt
D. sachs
11
330Photorespiration is also called
A. ( C_{2} ) cycle
B. ( C_{3} ) cycle
c. ( C_{4} ) cycle
D. ( C_{5} ) cycle
11
331ATP synthesis in cell requires
( mathbf{A} cdot H^{+} ) gradient across the membrane
B. ( K^{+} ) gradient across the membrane
C ( cdot P O_{4}^{3-} ) gradient across the membrane
D. ( C a^{2+} ) gradient across the membrane
11
332ATP synthesis during light reaction is
A. Oxidative phosphorylation
B. Photolysis
c. Photophosphorylation
D. Phosphorylation
11
333Study the graph which shows results of
three different experiments ( P, Q ) and ( R )
Now compare curves ( Q ) and ( R ) and
answer the following question:
Which factor has been altered to
produce the differences you can see
between two curves?
( A cdot C O_{2} ) concentration
B. Temperature
( c . ) Both ( A ) and ( B )
D. None of the above
11
334Peroxisomes are found in
A. Bundle sheath
B. Endospem
C . Mesophyll cell
D. Vascular bundle
11
335What is the disadvantage of
photorespiration? Explain how the photorespiratory losses are overcome in plants like sugarcane.
11
336In PS I, the reaction centre Chl a has absorption maxima at whereas in PS II, the reaction centre Chl
a has absorption maxima at
A. ( 700 mathrm{nm}, 680 mathrm{nm} )
B. ( 680 mathrm{nm}, ) 700nm
c. ( 400 mathrm{nm}, 500 mathrm{nm} )
D. 700 ( mathrm{nm}, 800 mathrm{nm} )
11
337Write any three differences between photo respiration and dark respiration.11
338Which of the following is formed during photorespiration?
A. Sugar
B. Phosphoglycolate
c. NADPH
D. ATP
E. Oxaloacetate
11
339What is the PAR range?
A. ( 200 n m-800 n m )
B. 400nm – 700nm
c. ( 350 n m-550 n m )
D. ( 600 n m-100 n m )
11
340What is the law of limiting factors? Explain it with an illustration.11
341Photorespiration occurs in
A. Ribosomes
B. Mitochondria
c. Peroxisomes
D. Both B and C
11
342Why does the total amount of ( C O_{2} ) in the atmosphere remains constant even
though respiration liberates ( C O_{2} ? )
( A cdot C O_{2} ) acts as a buffer
B. ( C O_{2} ) is converted to carbohydrates in photosynthesis
( mathrm{c} cdot mathrm{CO}_{2} ) forms carbonic acid
D. ( C O_{2} ) undergoes cleavage during photosynthesis
11
343For synthesis of one gram of hexose, the
land plant consumes
A. Only ( 1 / 3 ) rd of the ( C O_{2} ) of air
B. Only ( 1 / 4 ) th of the ( C O_{2} ) of air
C. only ( 2 / 3 ) rd of the ( C O_{2} ) of air
D. None of the above
11
344The three cardinal points related to photosynthesis was proposed by
A. Blackman
B. Sachs
c. Roger slack
D. None of the above
11
345Correct percentage of ( mathrm{CO}_{2} ) present in the
atmosphere is
A . 0.03%
B. 0.3%.
c. ( 1 % )
D. 1.1%
11
346Conversion of light energy into chemical energy within the plant body was first stated by?
A. Mayer and Anderson
B. Calvin
c. Robert Mayer
D. Willstatter and Stoll
11
347Match the items of column I and
column I
( begin{array}{llll}text { Column } & & text { Column II } & \ & text { I } & & \ text { a } & text { Mitchell } & text { p } & begin{array}{l}text { Steps of dark reaction } \ text { to photosynthesis }end{array} \ text { b } & text { Gibbs } & text { q } & text { Photophosphorylation } \ text { c } & text { Arnon } & text { r } & text { Concept of free energy } \ text { d } & text { Calvin } & text { s } & begin{array}{l}text { Chemiosmotic } \ text { hypothesis }end{array} \ & text { t } & text { Mass flow hypothesis }end{array} )
( A cdot a-s, b-t, c-r, d-q )
B. ( a-s, b-r, c-p, d-q )
( c cdot a-r, b-s, c-p, d-q )
D. a-s, b-r, c-q, d-p
11
348Electron vacancy in PSI in ETS is replaced by
A. PSII
B. Plastocyanin
c. Photolysis of water
D. None of these
11
34928. The process of photosynthesis
involves conversion of
(1) chemical energy into radiant
energy
(2) chemical energy into mechan-
ical energy
(3) solar energy into chemical
energy
(4) mechanical energy into solar
energy
11
350The enzymes ribulose biphosphate carboxylase-oxygenase and phosphenol pyruvate carboxylase are activated by
A . Mg
B. zn
c. мо
D. Mn
11
351Which one of the following is not a limiting factor for photosynthesis?
A. Oxygen
B. Carbon dioxide
c. chlorophyll
D. Light
11

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