Life Processes Questions

We provide life processes practice exercises, instructions, and a learning material that allows learners to study outside of the classroom. We focus on life processes skills mastery so, below you will get all questions that are also asking in the competition exam beside that classroom.

Life Processes Questions

List of life processes Questions

Question NoQuestionsClass
1Identify the type of nutrition in Amoeba.
A. Saprotrophic
B. Parasitic
C. Holozoic
D. Holophytic
2Digestion in amoeba mainly takes place in
A. Food vacuole
B. Cytoplasm
c. water vacuole
D. None of the above
3The floating roots in water absorbs the
air from
A. Dissolved oxygen in water
B. Dissolved oxygen in soil
c. Stomata
D. None of the above
4What is digestion? Why do only animals require a digestive system?10
5What are the necessary conditions for
autotrophic nutrition and what are its
6The muscular contraction in the
alimentary canal is known as
A. systole
B. Diastole
c. Peristalsis
D. Metachronal
7Describe the process of nutrition in
amoeba.Draw labelled diagram to show
that various steps of nutritions in
8How does gaseous exchange occur in plants across
(a) Leaves
(b) Roots?
9The internal cellular energy reserve in autotrophs is
A . Glycogen
B. Protein
c. starch
D. Fatty acid
10( C_{40} H_{56} O_{2} ) is the chemical formula of a
A. xanthophyll
B. Carotene
c. Anthocyanin
D. chlorophylı.
11Sunken stomata occur in
A. Mango
B. Guava
c. Hydrilla
D. Nerium
12All of these secretes digestive enzyme,
A. Salivary glands.
B. Liver
c. Pancreas.
D. Small intestine
E. Stomach.
13In photosynthesis solar energy is captured by the pigment called10
14A root parasite is
A. Loranthus
B. Rafflesia
c. viscum
D. cuscuta
15Which of the following statement is not
true for stomatal apparatus?
A. Guard cells are always surrounded by subsidiary cells
B. Stomata are involved in gaseous exchange
C. Inner walls of guard cells are thick
D. Guard cells invariably possess chloroplasts and mitochondria
16In Amoeba which of the following helps in digestion?
A. Pseudopodia
B. Cytoplasm
c. Nucleus
D. vacuole
17Draw a labelled diagram of human digestive system and explain it.10
18A mutually beneficial relationship between two different organisms for nutrition is called as
A. Symbiotic Nutrition
B. Parasitic Nutrition
c. Saprobiotic Nutriton
D. Detritivores
19Aerobic respiration occurs in
A. Thylakoid.
B. Golgi body.
c. Grana
D. Mitochondria.
20Write two differences between
autotrophic and heterotrophic nutrition.
21The instrument by which B.P. of man is determined is
A. Sphygmomanometer
B. Cardiograph
c. Ultrasound
D. stethoscope
22Out of photosynthesis and respiration
in plants, which process occurs all the time?
23Match the scientist and their
discoveries given in Column I and I
correctly and choose the correct
combination from the following.
( mathbf{A} )
( A-p, B-q, C-r, D-t )
B. ( A-q, B-p, C-s, D-t )
C. ( A-q B-p, C-r, D-t )
D. ( A-q, B-p, C-t )
( D )
24Name the most acceptable theory of origin of life. Who gave this theory?10
25Digestion of food in human starts from
A. Duodenum
B. Small intestine
c. Mouth
D. Large intestine.
26During respiration in plants, the glucose is broken down into
A. Carbon dioxide
B. water
c. Energy
D. All of the above
27Explain the process of nutrition in
28Which of the following organ system
takes in food, breaks it down into
smaller chemical units, and absorbs
the nutrient molecules?
A. Digestive system
c. circulatory system
D. Endocrine system
E. Nervous system
29Match the items in Column I with as
many items as possible in Column ( begin{array}{llll} & text { Column I } & & text { Column II } \ text { (a) } & text { Deer } & text { (i) } & text { Autotroph } \ text { (b) } & text { Parrot } & text { (ii) } & text { Ecosystem } \ text { (c) } & text { Cobra } & text { (iii) } & text { Pond } \ text { (d) } & text { Pine tree } & text { (iv) } & begin{array}{l}text { Deciduous } \ text { forests }end{array} \ text { (e) } & text { Grasshopper } & text { (v) } & text { Parasite } \ & text { (vi) } & text { Carnivore } \ & text { (vii) } & text { Producer }end{array} )
30The diagram gives information about
blood pressures in various parts of the circulatory system during the cardiac cycle. At which point ( a, b, c ) or ( d, ) does
the semi-lunar valve of the aorta close?
( A )
( c cdot d )
( D )
31The rate of is more than the
rate of ( _{–}-_{–} ) in the daytime in the
case of green plants.
32Which of the following part is excluded from the study of T.S. of gut.
A. Pharynx
B. Esophagus
c. colon
D. Rectum
33Milk caesin- – – -Y- – -> Paracaesin- – – -M- – ->
Calcium paracaesinate (curding of milk). In the above equation ‘Y’ and ‘M’ indicates
A. Rennin and ( C a^{++} ) respectively
B. ( C a^{++} ) and Renin respectively
C. Renin and HCl, ( C a^{++} ) respectively
D. Renin and ( C a^{++} ) respectively
5 \
35The hormone ANP is produced by the
A. Adrenal glands
B. Capillary walls
c. Kidneys
D. Atria
36The urinary opening is known as
A. Urinary bladder
B. Ureter
C. Urethera
D. None of the above
37Amoeba sticks to substratum by means
A. Rough surface
B. Plasmalemma
c. Protein
D. None of the above
38Which plants has a trap, which looks and shows like a flower to insects?
A. Drosera
B. Balsam
c. Lotus
D. Venus Fly trap
39Which of the following term can be related to the opening of guard cell?
A. Turgidity
B. Flaccidity
c. Transpiration
D. None of the above
40An example for saprophytic angiosperm
A. Drosera
B. Vanda
C. Monotropa
D. cuscuta
41An insectivorous// carnivorous plant is
A. Viscum
B. Parkinsonia
c. santalum
D. Utricularia
42In the cardiac cycle, diastole is
A. The number of heart beats per minute.
B. The relaxation period after contraction of the heart.
C. The forceful pumping action of the heart
D. The contraction period after relaxation of the heart.
43Which of the following statement proves that guard cell is a living cell?
A. It has a nucleus
B. It has chloroplast.
c. It is a bean shaped cell.
D. Both A and B
44Photosynthesis is mainly responsible for the existence of
A. Plants on this earth
B. Animals on this earth
c. Both plants and animals
D. None of these
45The ( ldots ldots . . . ) capture the energy present in sunlight and convert it into chemical
46Consider the following statements:
(a) High blood pressure is an infectious disease.
(b) Penicillin is effective against
bacteria because it inhibits their wall
(c) AlDS spreads, through sex, blood to blood contact and from mother to child.
Which of the above statements are
( A cdot(a) ) and ( (b) )
B. (b) and (c)
( c cdot(a),(b) ) and ( (c) )
D. None of the above
47How is chemosynthesis and
photosynthesis similar?
A. Both are found in hydrophytes
B. Both are associated with heterotrophy
C. Both are dependent on solar energy
D. Both are autotrophic mode of nutrition
48Oxygen we breathe is obtained from
A. Respiration
B. Guttation
c. Photosynthesis
D. All of the above
49Given is the diagram of agarose gel
kept under UV light. Mention the positive and negative
50When a person suffers from a marked
fall in blood pressure, it is helpful to administer the hormone:
A. thyroxine
B. adrenaline
c. insulin
D. parathormone
51The growth of which group of bacteria will be slow in comparison to the others?
A. Obligate aerobes
B. obligate anaerobes
c. Facultative aerobes
D. Facultative anaerobes
52Choose incorrect statement about
A. It is a physico- chemical process
B. Oxygen is evolved as a by product in all photosynthetic organisms
C. Occurs in unicellular and multicellular
D. Anabolic and reductive process
53Write any two events occurring the
process of photosynthesis.
54Very short answer type.
Name two organs of the digestive system that secrete the most fluid
55The value of diastolic blood pressure is
A. ( 120 mathrm{mm} ) Hg
B. 80 mm Hg
c. ( 120 / 80 mathrm{mm} ) нg
D. 40 ( mathrm{mm} ) Hg
56Why is it usually difficult to demonstrate respiration in green plants?10
57Organisms that can prepare their own food.
A. Autotrophs
B. Heterotrophs
c. Phototrophs
D. None of the above
58When only light of wavelength beyond ( 680 mathrm{nm} ) are available then which of the
following is not occur:-
A. Absorption of light
B. Formation of ATP
c. Release of ( C O_{2} )
D. Excitetion of electron
59An example of chemosynthetic bacteria
A. E. coli
B. Sulphur bacteria
c. Nitrobacter
D. Both B and C
60a. By which process do green plants synthesize their food?
b. Name the factors which take part in
this process.
c. Write the chemical equation of the above process.
61If the systolic pressure is ( 120 mathrm{mm} mathrm{Hg} ) and diastolic pressure is ( 80 mathrm{mm} ) Hg, the pulse pressure is
B. ( 120+80=200 mathrm{mm} mathrm{Hg} )
c. ( 120-80=40 mathrm{mm} ) Hg
( mathbf{D} cdot frac{120}{80}=1.5 mathrm{mm} mathrm{Hg} )
Stomata are “turgor operated valves”
Stomata show reversible turgor
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
63What is stomatal apparatus? Explain
the structure of stomata with a labelled
64Which one is not correctly matched?
A. Mucor- Autotroph
B. Orobanche-Root parasite
c. cuscuta- stem parasite
D. Drosera- Insectivore
65Heterotrophs may be
A. Holozoic.
B. Saprophytic.
c. Parasitic
D. All of the above.
66Excess of Natt ions in human system
A. Diabetes
B. Anemia
c. Low blood pressure
D. High blood pressure
67The major parts of the digestive system of grass hopper are
A. Gizzard, crop and hepatic caecae
B. Foregut, midgut and hind gut
c. Gizzard, ileum and midgut
D. Pharynx, oesophagus and stomach
68Match the following components of
Column ‘A’ with the components of
Column Column ‘B’ ‘A’
(A) A trap which looks and smells like Venus fly ( quad ) a flower to catch the insects trap
(B) Flower opens in the morning Balsam
(C) Fruit bursts open to Drosera
(D) Tentacles on leaves which can trap Lotus ( quad ) insects
( A cdot(1)-(A),(2)-(C),(3)-(D),(4)-(B) )
B. ( (1)-(A),(2)-(C),(3)-(B),(4)-(D) )
C ( cdot(1)-(D),(2)-(C),(3)-(A),(4)-(B) )
D. ( (1)-(D),(2)-(B),(3)-(A),(4)-(C) )
69The irregular shape of amoeba is attributed by the presence of
A. Food vacuole
B. Slimy cell membrane
c. Pseudopodia
D. contractile vacuole
70For the process of photosynthesis, all except one of the following items are essential. Point out the exceptions.
A. Water and mineralss
B. Light and chlorophyıl
c. ( mathrm{co}_{2} ) and optimum temperature
D. Oxygen and sucrose
71In which of the following properties does an animal and a plant differ?
A. Presence of organs
B. Growth
c. Reproduction
D. synthesis of food
72Which processes would you consider essential for maintaining life?10
73The plants excrete ( C O_{2} ) produced as a waste during process in night
A. Photosynthesis
B. Translocation
c. Respiration
D. Transpiration
74The marine plants living at different depths of ocean are adapted to survive
A. In UV component of solar radiation
B. Without any component of solar spectrumm
C. In only some components of solar radiation
D. By using chemical source of energy for photosynthesis
75Write the procedure involved in the acid and leaf experiment to understand the concept “how the stomach gets
protected from its own acid secretions” Compare the observations with the
changes that takes place in human digestive system.
76Lack of oxygen in body fluids is known
A. Hyperpnoea.
B. Anoxemia.
c. Anoxia.
D. Hypoxia.
77Which one of the following is not a photosynthetic diazotroph.
A. Nostoc
B. Frankie
c. Anabaena
D. Rhodospirillum
78Intercrescence of endothelium and
endodermis occurs in
A. sinuses
B. Rete mirabile
c. Great blood vessels
D. Corpus luteum
79Oxygen in atmosphere has been formed
A. Evaporation of water
B. Photosynthesis of blue green algae
c. Metabolism of microorganisms
D. Decaying organisms
8035. The green pigment found in
plants that perform photosynthe-
sis is
(1) Chlorophyll not
(2) Chloroplast
(3) Chloroform
(4) None of these
81How does respiration occur in the stem of the plant?10
82Which of the following systems is responsible for producing enzymes that aid in breaking down of complex substances to be absorbed for the
body’s growth and repair?
A. Respiratory system
B. Digestive system
D. Nervous system
83State whether the following statements
are true or false.

Photosynthesis is the most abundant form of anabolic metabolism in life.
A. True
B. False

84Mark the incorrect reason why plants
need water and minerals
A. Transportation
B. cooling
c. Bleeding
D. All
85Choose the correct answer from the
alternatives given Drowsiness, felt after a heavy lunch, is
due to:
A. increased blood pressure
B. decreased blood pressure
c. decreased pulse rate
D. increased pulse rate
86Which of the following statements is a
correct distinction between autotrophs
and heterotrophs?
A. Only heterotrophs need to acquire chemical compounds from the environment
B. Cellular respiration is unique to heterotrophs
C. Only heterotrophs have mitochondria
D. Autotrophs, but not heterotrophs, can nourish themselves beginning with nutrients that are entirely inorganic
87( ln mathrm{BP} 120 / 80, ) the numerator 120
88With the help of labelled diagrams describe the structure of an artery, a
vein and a capillary. State how each of these are adapted for its functions.
89Photosynthesis occurs in the
A . Root
B. Stem
c. Leaf.
D. Fruit
90Photosynthetic synthesis of
carbohydrates uses ( C O_{2} ) and
A. Water in the presence of sunlight with the help of chlorophyll
B. Water in the presence of energy
c. Water with the help of chlorophyll
D. Presence of sunlight
91Which of these groups of words means
the same thing?
A. Autotrophs and consumers
B. Autotrophs and producers
c. Heterotrophs and producers
D. Autotrophs and carnivore
92Why is it proper to say that almost all
living things are dependent on solar
93A leaf has labeled as ( A ) has 20 stomata.
A leaf labeled as B has 10 stomata.
Which of the following statement defines the percentage of water vapour released by both the leaves?
A. Leaf A releases more water vapour than leaf ( B )
B. Leaf A releases less water vapour than leaf B.
c. Leaf A equals leaf
D. None of the above
94Assertion: Dark periods play a more important part in flowering than light

Reason: Flowering occurs in short-day plant if the dark period is interrupted by light break.
A. If both the assertion and 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 reaon is false
D. If both the assertion and reason are false
E. If the assertion is false but reason is true

95Systole brings about the
A. Entry of blood into lungs
B. Entry of blood into heart
C. Exit of blood from lungs
D. Exit of blood from ventricles
96Write the answer in one sentence each:
Where did the grinding of food in Grasshopper?
97The number of stomatal pores per ( c m^{2} ) of leaf surface are in the range of
A ( .1000-60,000 )
B. 10 – 1000
c. ( 50,000-100,000 )
D. 50-100
98Carnivorous animals use these teeth to
tear flesh.
A. Incisors
B. Canines
c. Premolars
D. Molars
99Which one is an epiphyte?
A. Cuscuta
B. Orchid
c. Drosera
D. corypha
100At least a half of the total ( C O_{2} ) fixation
on- Earth is carried out through photosynthesis by
A. angiosperms
B. gymnosperms
c. algae
D. bryophytes
101Green plants are known as10
102Organisms are able to capture free energy from small inorganic molecules through a process called
chemosynthesis. These inorganic elements may include
A. water
B. Sulfur
c. Carbon dioxide
D. Hydrogen.
103The major excretory product in humans
A. Urea
B. Ammonia
c. Uric acid
D. All of the above
104Transpiration is best defined as
A. loss of water from the plant
B. loss of water as vapour from the plant
C . evaporation of water from the surface of leaves
D. None of the above
105Microscopic pores in plants through which they expire air are called
A. stigma
B. Thalamus
c. Gills
D. Stomata
106Example of life processes is
A. Excretion
B. Respiration
c. Photosynthesis
D. All of the above
107Humans and animals are dependent on
A. Directly
B. Indirectly
c. Both A and B
D. None of the above
108Give a brief account on absorption of
food in small intestine.
109The site of initial digestion of
carbohydrates is
( A cdot A )
3. ( c )
( c cdot D )
( D cdot F )
E . H.
110The form of energy used in the process of respiration is
A. Chemical energy
B. Electrical energy
c. Mechanical energy
D. Radiant energy
111A carnivore eats
A. Sprouted seeds
B. Milk
c. Green leaves
D. Flesh of other animals
112Fill in the-blanks with suitable terms
given below:
(Fast, Leaves, Stomata, Closed,
Transpiration, Humid) The leaves have more ( ldots ). on their lower
113Differentiate between aerobic and
anaerobic respiration.
114Which of the following groups includes
organs of the same organ system?
A. Trachea, Oesophagus, stomach
B. Pancreas, Lungs, Stomach
c. oesophagus, Rectum, stomach
D. Stomach, Pancreas, Heart
115Substances necessary for autotrophic nutrition are
( A cdot C O_{2} ) and ( H_{2} O )
B. Chlorophyll
c. sun light
D. All of the above
116In the demonstration of stomata on a
leaf peel. The peel should be taken from
A. Freshly-plucked leaf
B. Dry plucked lead
c. Freshly or dry plucked leaf
D. None of the above
117Short / Long answer type questions. Explain why there, is greater emphasis on a molecular approach to understand life today than before10
118The science that deals with the study of
life processes is known as
A. Psychology
B. Physiology
c. Biochemistry
D. Morphology
119What are the steps in photosynthesis?10
120In Utricularia, the leaves are modified to
A. Bladders
B. Tendrilss
c. Hooks
D. Pitchers
121Systolic pressure is higher than
diastolic pressure due to
A. Volume of blood in the heart is greater during systole
B. Arteries contract during systole
C. Blood vessels offer resistance to flowing blood during systole
D. Blood is forced into arteries during systole
122Atrial natriuretic factor-
A. increases blood pressure
B. decreases blood pressure
C. increases absorption of ( N a^{+} )
D. is a vasconstrictor
123In Nepenthes, the pitcher is modified
A. Whole leaf
B. Leaf apex
c. Lamina
D. Petiole
E. Leaf base
124Photosynthesis is held in the leaf of a plant. In which synthesis organic material called ……………. This food
materials are transported by ……….. tissue to all parts of the plant.
125Which one of the following conditions need not be present for photosynthesis to proceed?
A. water
B. Oxygen
c. Light
D. chlorophyll
126Autumnal leaf colour is due to
A. chlorophyll a
B. Carotenoids
c. Anthocyanins
D. Betacyanin
127Which of the following is the constituent of guard cell?
A. Nucleus
B. Vacuole
c. chloroplast
D. All of the above
128Write one structural difference between
the composition of artery and veins.
12937. Hydrochloric acid is secreted by
the cells lining the
(1) Oral cavity
(2) Stomach
(3) Ileum
(4) Colon
130Which of the following process defines the amount of turgidity of the guard
A. Photosynthesis
B. Excretion
c. secretion
D. Absorption
131Which of the following is not a waste product produced by plants?
A. Water vapour
B. Oxygen
c. Gum Arabic
D. carbon dioxide
( y )
133In respiration, the energy not captured
by ATP is
A. Transferred to organic compounds
B. Converted into heat
C . Liberated along with ( C O_{2} )
D. Transferred to water
134Select an incorrect option regarding the
given figure.
A. ( P ) is a compound gland with exocrine and endocrine
B. ( R ) is formed from duct of gall bladder along with the hepatic duct.
C. ( R ) is guarded by a sphincter of Oddi
D. Q stores bile which is actually produced in liver
135When yeast and sugar solution are left to stand without oxygen for some time they develop a characteristic smell due to the production of new compound, which is
A. Ethanol
B. Ammonia
c. Carbondioxide
D. Sodium carbonate
136Match the columns.
Column 1 1 Columr
A. Waste product of respiration
1. Resin
B. Waste product of ( quad ) 2. ( mathrm{CO}_{2} ) photosynthesis
3. Essential
( mathrm{C} )
Leaves of ( 1 € ) flemon I
o oil
D. Stem of conifers 4. ( O_{2} )
( A cdot A-2, B-4, C-1, D-3 )
B. ( A-2, B-4, C-3, D-1 )
C. ( A-4, B-2, C-3, D-1 )
D. ( A-2, B-3, C-4, D-1 )
137Respiratory rate in new born baby is
A. Equal to an adult
B. Less than an adult
c. More than an adult
D. None of the above
138What are saprophytes? Give two examples10
139Lenticels are found in
A. The stem in which secondary growth has taken place
B. The root where secondary growth has occurred
C. The roots as well as the stem where secondary growth has occurred
D. None of these
140In plants, food is transported through
A. Companion cell
B. Sieve tubes
c. Tracheids
D. vessels
141Contractile vacuole of Amoeba placed in
salt water will
A. Burst
B. Disappear
c. Enlarge
D. Multiply
142Differentiate between veins and
143The amino acid ( _{-1-}- ) is obtained by
microbial process by lactobacillus delbrueckii
A. itaconic acid
B. lactic acid
c. gluconic acid
D. citric acid
144Blood vessels do not pierce
A. Dermis
B. Endodermis
c. Epidermis
D. None of the above
145All the organism uses oxygen to
produce energy except
A. Humans
B. Mango tree
c. clostridium
D. Pseudomonas
146Explain the different types of adaptations in plants with suitable examples.10
147Name the pores in a leaf through which respiratory exchange of gases takes place.10
148How do plants get rid of their excretory products?
A. Shedding leaves
B. Shedding bark
c. Both A and B
D. Shading fruits
149The chief advantage of encystment to an Amoeba is
A. The chance to get rid of accumulated waste products
B. The ability to survive during adverse physical conditions
c. The ability to live for some time without ingesting food
D. Protection from parasites and predators
150is taken in through the tiny pores present on the surface of the leaves
A. Carbon dioxide
B. Nitrogen
c. oxygen
D. None of these
151The engulfment of food in amoeba is
known as
A. Excretion
B. Phagocytosis
c. Respiration
D. All of the above
152What is the systematic position of funaria?10
153What is Glycolysis? Write main steps of ¡t.10
154Which of the following statement is/are
(A) All green plants can prepare their own food.
(B) Most animals are autotrophs.
(C) ( C O_{2} ) is not required for
(D) Oxygen is liberated during photosynthesis.
Choose the correct answer from the
options given below.
( A cdot(A) ) and ( (D) )
B. (B) only
c. (B) and (C)
D. (A) and (B)
155Difference between diastole and systole
pressure is
A . 40
B. 60
c. 80
D. 120
156Observe the pictures given below and tell the life process shown in each of these
( (a) )
( (b) )
( (c) )
157Why do we see dew drops on leaves in
the early morning?
Stomata are generally open in light and
close in dark
Transpiration is enhanced by heating
effect of light
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
159Autotrophs and heterotrophs differ in
A. How they obtain their carbon.
B. Whether they are prokaryotic or eukaryotic.
C . How they reproduce, sexually or asexually.
D. Whether they use chemicals or light as a source of energy.
160Breakdown of proton gradient leads to release of10
161Few organisms can breathe without air Justify10
162Insectivorous plants grow in areas deficient in
A. Phosphorus
B. Nitrogen
c. sulphur
D. Iron
163Which of the following organisms show
mixotrophic nutrition?
( A )
( c )
D. Both B and C
164Essential nutrients are
A. Made by the body
B. Supplied by food
C. Enzymes
D. Alcohol
165Pick the odd one out.
The parts of the alimentary canal are (Pharynx. Mouth, Buccal Cavity, Pancreas)
166You remove four fresh tobacco leaves of
similar size and age. Leave “leaf ( 1 ” ) as it is, smear “leaf ( 2^{prime prime} ) with vaseline on the
upper surface, “leaf ( 3^{prime prime} ) on the lower
surface and “leaf ( 4 ” ) on both the
surfaces. Hang the leaves for a few hours and you observe that leaf 1 wilts
the most, leaf 2 has wilted, leaf 3 wilted
less than leaf 2 and leaf 4 remains
fresh. Which of the following conclusion is most logical?
A. Tobacco leaf has more stomata on the upper surface
B. Tobacco leaf has more stomata on the lower surface
c. Stomata are equally distributed in upper and lower surfaces
D. No conclusion on stomatal distribution can be drawn from this experiment
167What is the source of oxygen for
respiration in plants during daytime?
168The term photosynthesis was coined by
A. Fiescher
B. Priestley.
c. Blackman
D. Barnes
169Which of the following is associated with the closure of stomata?
A. Turgidity
B. Flaccidity
c. stoma
D. Transpiration
170A heterotroph obtains its carbon supply
A. organic chemicals
в. ( C O_{2} )
c. Methane
D. Cyanide.
171Match the two lists. Choose the choice
which gives the correct combination of
the alphabets of the two columns.
List II
(Secretions) List I (Type of
cells) Lysozyme ( A ) begin{tabular}{c|c}
( ^{A} ) & ( B ) eta cells \
hline( B ) & ( M ) astcells \
hline C & Paneth cells \
hline Acinarcells \
end{tabular} Mucus
( r ) Histamine s ( quad ) Insulin ( t quad ) Pancreatic
A. ( A-q, B-r, C-p, D-t )
B. A-s, B-r, C- p, D-t
C. ( A-t, B-q, C-r, D-s )
D. ( A-s, B-q, C-p, D-t )
172What are heterotrophs?10
173What is the mean blood pressure in the
174What are respiratory substrates?10
175Which of the following processes is not a step involved in the water-cycle operating in nature?
A. Evaporation
B. Transpiration
c. Precipitation
D. Photosynthesis
176Which of the following statements
about the autotrophs is incorrect?
A. They synthesise carbohydrates from carbon dioxide and water in the presence of sunlight and chlorophyll.
B. They store carbohydrates in the form of starch.
C. They convert carbon dioxide and water into carbohydrates in the absence of sunlight.
D. They constitute the first trophic level in food chains.
177Choose the correct answer from the
alternatives given
Plants are green because they
A. absorb only green wavelengths of light
B. absorb only yellow and blue wavelengths of light
c. reflect green wavelengths of light
D. reflect yellow and blue wavelengths of light
178Mitochondria are store houses of
A. Glycogen
B. Glucose
c. АтР
D. Fats
179What moves the food in the digestive
180Most of the vertebrates have jaws with teeth. The mode of arrangement of teeth
on the jaws is called dentition.
The various types of teeth seen in mammals are incisors (I) canines (C)
premolars (P) and molars(M). They are used for biting, tearing, chewing and grinding respectively. Canines, the tearing teeth are welldeveloped in carnivores and illdeveloped or absent in herbivores.
Now answer the following:
(i) In frogs, all the teeth in the upper jaw look alike, whereas in human beings
they are different. The type of dentition in man can be called
(a) Homodont
(b) Isodont ( (c) )
(d) Acrodont
(ii) The dental formula of a mammal is
written as ICPM=2023/1023. The teeth
missing in it are
(a) incisors
(b) canines
(c) premolars
(d) molars
181Autotrophic organism include
A. Green plants and sulphur bacteria
B. Green plants and all the bacteria
C. Bacteria and virus
D. Bacteria and fungi
182Give reason
It is different to demonstrate
respiration in plants.
183These organisms are fungus like in one
phase of their life cycle and Amoeba like in another phase of their life cycle
A. Diatoms
B. Slime molds
c. Dinoflagellates
D. water molds
184The process which helps in perpetuation of race
A. Nutrition
B. Photosynthesis
c. Excretion
D. Reproduction
185The cells surrounding the stomata are known as
A . Guard cells
B. Subsidiary cell
c. stoma
D. None of the above
Photosynthesis takes place in all green
Chlorophyll is essential for
A. Both A and R are true but R is the correct explanation of
B. Both A and R are true but R is not a correct explanation of
c. ( A ) is true but ( R ) is false
D. A is false but R is true
187Living organisms have ( ldots ). essential
A. 5
B. 6
( c cdot 7 )
( D )
188Waste products are stored as resins and gums in the
A. old xylem
B. Young xylem
c. old phloem
D. Young phloem
189Arteries are best defined as the vessels
A. Supply oxygenated blood to the different organs
B. Carry blood away from the heart to different organs
c. Break up into capillaries which reunite to form a vein
D. Carry blood from one visceral organ to another visceral organ
190Choose the correct answers from the
alternatives given Pseudopodia in Amoeba are important
A. locomotion only
B. feeding only
c. both locomotion and feeding
D. none of these
191A true species consists of a population which is?
A. Sharing the same niche
B. Interbreeding
c. Feeding over the same food
D. Geographically isolated
192The digestion of food in amoeba is
A. Intracellular
B. Intercellular
c. Intravenous
D. None of the above
193Blood pressure of a person is measured by10
194The conduction of urine from kidney to the urinary bladder takes place by
A. Ureter
B. Urethra
c. Ovary
D. None of the above
195A plant that prepares its own food is
A. Autotroph
B. Parasite
c. Epiphyte
D. Saprophyte
196In the diagrams we conventionally show veins in blue.What is the actual colour
of the blood following through the following?
(i) In arteries
(ii) In veins (iii) In
197Plants, but not animals, can convert fatty acids to sugars by a series of reactions called
A. photosynthesis
B. Krebs cycle
c. glycolysis
D. glyoxylate cycle
198State differences between the blood
vessels-artery, vein and capillary
199Which of the following are excretory products in animals?
A. Urea
B. Uric acid
c. Ammonia
D. All of the above
200Which of the following process helps in the absorption of nutrients in amoeba?
A. Assimilation
B. Engulfment
c. Digestion
D. Excretion
201Toadstools cannot manufacture their
food because they
A. Possess haustoria
B. Lack chlorophyll
c. Live in dark places
D. Do not have leaves
202What criteria do we use to decide
whether something is alive?
203If Amoeba is kept in distilled water, its contractile vacuole
A. Works slowly
B. Works faster
c. Remains unaffected
D. Disappears
204Mucus is secreted by the
A. Stomach
B. Duodenum
c. Large intestine
D. All of the above
205In which of the following animal dimorphic nucleus is found
A. Amoeba proteus
B. Plasmodium vivax
c. Paramecium coudatum
D. Trypanosoma gambiense
206A plant that has both autotrophic and heterotrophic mode of nutrition.10
207An adaption for better gaseous exchange in plant leaves is
A. Hair on lower surface
B. Multiple epidermis
c. waxy cuticle
D. Stomata on lower surface away from direct sun rays
208Select the correct statement.
A. Heterotrophs do not synthesize their own food.
B. Heterotrophs utilize solar energy for photosynthesis.
C. Heterotrophs synthesize their own food.
D. Heterotrophs are capable of converting carbon dioxide and water into carbohydrates.
209The blood pressure is high in
A. Arteries
B. Vein
c. capillaries
D. Veins portal system
210Which statement is correct for blood
A. The instrument by which we can measure B.P. is called stethoscope
B. Normal B.P. of the healthy person is ( 140 / 80 mathrm{mm} ) Hg.
C. Diastolic pressure that shows the state of heart relaxation.
D. Systolic pressure limit is 140 ( mathrm{mm} mathrm{Hg} )
211List 1
A) Autotrophic nutrition
1) Leech
B) Heterotrophic nutrition
2) Paramaecium
C) Parasitic nutrition
3) Deer
D) Digestion in food vaculoes
4) Green plant
Correct match of ( A, B, C ) and ( D ) is
( A cdot A-4, B-3, C-2, D-1 )
B. A- 4, B- 3, C-1, D-2
C. ( A-3, B-4, C-1, D-2 )
D. ( A-1, B-4, C-3, D-2 )
212‘Vasa-vasorum’ refers to
A. Jugular anastomosis
B. A network of blood vessels in an organ
C. Vessels of vessels
D. Carotid labyrinth regulating pressure of blood vessels
213If ( ^{prime} 1^{prime} ) represents the extracellular
digestion, ‘2’ represent the intracellular
digestion and ( ^{prime} 3^{prime} ) represent both type
then for coelentrata, ctenophore and
porifera, select the correct option.
A. 1,2,3 respectively
B. 3,3,2 respectively
c. 3,2,1 respectively
D. 3,2,2 respectively
214What is heterotrophic nutrition?
Describe its types.
215Why are hormones released into venous
blood and not to arteial blood?
216Which of the following is the correct representation of organisation levels in living beings?
A. Subcellular ( rightarrow ) Cellular ( rightarrow ) Individual ( rightarrow ) Community Population
B. Atomic ( rightarrow ) Molecular ( rightarrow ) Subcellular ( rightarrow ) Cellular ( rightarrow ) Tissue ( rightarrow ) Organ system ( rightarrow ) Individual
c. Individual ( rightarrow ) Population ( rightarrow ) organ system ( rightarrow ) Tissue ( rightarrow ) Cellular ( rightarrow ) Molecular ( rightarrow ) Atomic
D. Atomic ( rightarrow ) Molecular ( rightarrow ) Tissue ( rightarrow ) Individual ( rightarrow ) Ecosystem ( rightarrow ) Community
217Do plants breathe?10
218The incorrect statement is
A. Calcium oxalate crystals in leaves are raphides.
B. Calcium carbonate crystals are cystoliths.
C . Hydrilla is an amphistomatic.
D. Gossypium has commercially important trichomes.
219Plants exchange water with environment through structures by two cells
A . Lenticles
B. Hydathodes
c. Stomata
D. All the above
Earthworms enhance porosity as they
move through the soil and this enriches the growth of a plant.
Roots take up air from the air spaces present between the soil particles.
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
221Describe the process of respiration in the following parts of a plant.
222Most carbon dioxide in blood is in the
form of
A. carbon dioxide
B. carbonic acid
c. carbon monoxide
D. hydrogencarbonate
223Ideal function of vermiform appendixin human body is
A. Digestion of cellulose
B. Decrease the digestion
c. Produce more energy
D. Increase the weight
224Parrots are
A. Herbivores
B. Frugivores
c. sanguivores
D. Detritivores
225Which of the following is NOT a physical process of digestion?
A. Deglutition
B. Churning
c. Peristalsis
D. Emulsification
226Value based questions. When an animal is wounded, its overall blood pressure rises, but the area in
the vicinity of the wound swells as a result of local vasodilation. Why?
227Stomata on the surface of the leaf open
A. Decreasing the solute concentration in the guard cells.
B. Increasing the solute concentration in the guard cells.
C. Increasing the water potential in the guard cells.
D. Both B and C.
228The mode of nutrition in green plants is called
A. Heterotrophic
B. Holozoic
c. Autotrophic
D. Saprophytic
229Photosynthesis is an oxidationreduction process, the material that gets oxidised is
( A cdot C O_{2} )
( c cdot H_{2} 0 )
230Stomata of a plant open due to
A. Influx of potassium ions
B. Efflux of potassium ions
c. Influx of hydrogen ions
D. Influx of calcium ions
231The chemical digestion of food starts in the
A. Mouth
B. Stomach
c. Esophagus
D. Small intestine
E. Large intestine
232The function of part labelled as ( C ) is
A. Storage of blood
B. Storage of urine
c. Storage of water
D. None of the above
233Find the correct order of life process in
A. Pollination ( rightarrow ) Fertilisation ( rightarrow ) Plant ( rightarrow ) Embryo
B. Plant ( rightarrow ) Embryo ( rightarrow ) Fertilisation ( rightarrow ) Pollination
c. Pollination ( rightarrow ) Fertilisation ( rightarrow ) Embryo ( rightarrow ) Plant
D. Embryo ( rightarrow ) Pollination ( rightarrow ) Fertilisation ( rightarrow ) Plant
234Choose the correct answers from the
alternatives given

Name the process by which the suns energy is trapped as the source of energy used by virtually all living organisms
A. Metabolism
B. Glycolysis
c. Homeostasis
D. Photosynthesis

235To which organ does femoral artery supply blood
A. Dorsal part of thighh
B. All parts of hind limb
c. Ventral part of hind limb
D. Rectum
236The greater the number of chloroplast greater is the turgidity of guard cell.
A. True
B. False
237Which of the following is produced during the light phase of photosynthesis?
( mathbf{A} cdot A T P )
в. ( N A D P H_{2} )
c. Both ( A T P ) AND ( N A D P H_{2} )
D. Carbohydrates
238Plants are autotrophic. Can you think of
some plants that are partially heterotrophic?
239Largest flower belongs to
A. An epiphyte Vanda
B. A parasite Rafflesia
C . A saprophyte Neottia
D. Tree Alnus with symbiotic bacteria
240Man is ………… in nutrition.
A. Chemotrophic
B. Phototropic
c. Heterotrophic
D. All of the above
241In which organ the digestion of protein starts in the human digestive tract?
A. Mouth
B. Oesophagus
c. Stomach
D. Small intestine
242In a normal man to help the transport of
( O_{2} ) and ( C O_{2} ) properly, the blood is
A. Slightly alkaline
B. Slightly acidic
c. strongly alkaline
D. Strongly acidic
243What is autotrophic nutrition? Give one example of autotrophs.10
244Which of the following processes carries food through the digestive
A. Peristalsis
B. Resorption
c. Pinocytosis
D. Neurotransmitters
245In normal blood pressure ( 120 / 80 ) the denominator indicates ( ldots ldots . . . . . ) pressure.
A. Systolic
B. Diastolic
c. Both A and B
D. None of the above
246Read the following four statements
(i) Ventral respiratory group of neurons of medulla oblongata can cause both inspiration and expiration.
(ii) The part of the respiratory system starting with the external nostrils up to the terminal bronchioles constitutes
the respiratory or exchange part of the respiratory system.
(iii) During swallowing epiglottis can be covered by a thin elastic cartilaginous flap called glottis to prevent the entry of food into the larynx.
(iv) Binding of oxygen with haemoglobin is primarily related to
partial pressure of ( boldsymbol{O}_{2} ) Which of the above two statements are
A. (ii) and (iii)
B. (iii) and (iv)
c. (i)and(ii)
D. (i) and (iv)
247The figure given below
represents experimental set up with a
weighing machine to demonstrate a
particular process in plants. The experimental set up was placed in
bright sunlight. Study the diagram and
answer the following questions:

What is the purpose of keeping the test
tube ( mathrm{B} ) in the experimental set up?

248The gas absorbed during photosynthesis is
A. oxygen
B. Nitrogen
c. Ammonia
D. carbon dioxide
249The droplets of water arranged at the
edges of leaves of roses in the morning
A. Water drops condensed from the atmosphere during night at low temperatures
B. Water transpired from the stomata and lenticels
C. Water produced on the leaves from the reaction of hydrogen and atmospheric oxygen
D. None of the above
250Match the items of Column I with
suitable items in Column II
251How all life processes contribute to growth and development of body?10
252Which one of the following is a partial heterotroph?
A . Rafflesia
B. Eucalyptus
c. Drosera
D. Hydrilla
253A person meets with an accident and
great loss of blood has occurred. There is no time to analyse his blood group. It is safe to transfer blood of group
A. AB.Rht
B. AB,Rh-
( c cdot O, R h- )
D. O,Rht
254Select the incorrect option regarding digestion and absorption of substances in different parts of digestive system.
A. In large intestine, absorption of water, some minerals and drugs take place
B. Absorption of water, simple sugars and alcohol takes place in stomach
c. Small intestine is the principal organ for absorption of nutrients
D. The digestion is completed in large intestine
255Oxygen is transported through blood mainly by
A. Leucocytes.
B. Erythrocytes.
c. Thromobocytes.
D. Blood plasma.
256Closing cells are found in
A. Stomata
B. Sieve
C. Lenticels
D. wounded areas
257Stomata is grass leaf are
A. Rectangular
B. Dumb-bell shapedd
C. Barrel shaped
D. Kidney shaped
258Describe the process of respiration in the following part of a plant.
259In land plants, the guard cells differ from other epidermal cells in having
A. Chloroplasts
B. cytoskeleton
c. Mitochondria
D. Endoplasmic reticulum
260Oxygen is considered as the waste
product of
A. Regulation.
B. Respiration.
c. Reproduction.
D. Photosynthesis
261Stomatal frequency indicates
A. Number of stomata per unit area
B. Rate of water loss
C . Rate of gaseous exchange
D. Width of stomatal aperture
262Stomata in grass leaf are
A. Rectangular
B. Kidney shaped
c. Dumb-bell shaped
D. Barre shaped
263Distinguish between : Autotrophic nutrition and heterotrophic nutrition.10
264Opening on the leaf through which transpiration occurs is called10
265State whether the following statements
are true or false.

In atherosclerosis, deposition of lipids such as cholesterol, followed by precipitation of alcium salts, hastens hardening of a vessel
A. True
B. False

266Find the correct match
( A )
( A-3, B-6, C-2, D-5, E-4 )
, E –
B. ( A-5, B-2, C-3, D-6 )
( C cdot A-3, B-1, C-2, D-5, E-4 )
D. ( A-4, B-6, C-5, D-2 )
267The source of energy for carbon assimilation is
A. sunlight
B. water
c. chlorophyll
D. ( C O_{2} )
There is a decrease in photosynthesis if the photosynthetic cells are illuminated
by light of ( P_{680} ) nm or more wavelength
In red drop phenomenon the rate of photosynthesis decrease
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
269The false foot in amoeba is known as
A. Pseudopodia
B. Food vacuole
c. water vacuole
D. None of the above
270Each stomata is surrounded by
A. Passage cells
B. Guard cells
C. Parenchyma cells
D. Lenticels
271What are the main steps in aerobic
respiration? Where do they take place?
272You soak seeds of bean and observe
them after ( 2-3 ) days. what will be your observations?
273The artery which supplies blood to the diaphragm is known as
A. Cardiac artery
B. Phrenic artery
c. Lingual artery
D. Lumbar artery
274What is the length of the alimentary canal in human beings? List out the
parts of the gastro-intestinal tract in the correct sequential order based on the passage of food.
275Write the chemical reaction of the
photosynthesis and events occured during the process.
276The stored waste product in plants can be in the form of
A . Latex
B. Resins
c. Gums
D. All of the above
277Assertion. Stomata remain open during
the day time.
Reason. Stomata help in exchange of
278Given is an animal followed by three terms or features. Choose the term
which does not match with the animal.
A. Nucleus
B. Tentacle
c. Food vacuole
D. None of the above
279Where is bile produced? Which component of the food does it help to
280Very short answer type.
Name major forms in which ( C O_{2} ) is
transported by blood.
281What are stomata? Give two functions
of stomata.
282Leaves of the plant have tiny pores for exchange of oxygen and carbon dioxide. These small pores are known as
A. Nodule
B. Stomata
c. Radicle
D. None of the above
283Fill in the blanks with appropriate
Digestive system consists of Gl tract,
284Green plants are called ( _{—} ) since they
synthesise their own food
285Vasoconstriction causes
A. Increase in heart beat
B. Decrease in heart beat
C. Increase in blood pressure
D. Decrease in blood pressure
286Select in incorrect statement:
a) alimentary canal begins with an anterior cavity called buccal cavity.
b) tooth is embedded in a socket of
mandible bone only
c) human shows strict diphyodont type of dentition.
d) oesophagus and the trachea open into the phatynx
( A cdot a, b, c & d )
B. a, b &
( c cdot a, c & d )
D. ( a, b & d )
287a Q Type your question 3
( A )
C- ( 4, B-1, A-2 ) ( mathrm{H}-7, mathrm{G}-8, mathrm{F}-6, mathrm{E}-5, mathrm{D}-3 )
B. ( mathrm{H}-6, mathrm{G}-8, mathrm{F}-7, mathrm{E}-5, mathrm{D}-3, mathrm{C}-4, mathrm{B}-1, mathrm{A}-2 )
( c )
( mathrm{H}-6 ) , ( mathrm{G}-8, mathrm{F}-7, mathrm{E}-4, mathrm{D}-3, mathrm{C}-2, mathrm{B}-1, mathrm{A}-5 )
D. ( mathrm{G}-8, mathrm{F}-7, mathrm{E}-4, mathrm{D}-2, mathrm{C}-2, mathrm{B}-1, mathrm{A}-5 ) ( mathrm{H}-6 )
288Which blood vessels carry blood from different parts of your body to the heart?
A. Capillaries
B. Arteries
c. veins
D. All of the above
289Enzyme present on cristae are related
A. Anaerobic respiration
B. Aerobic respiration
( c cdot c O_{2} ) formation
D. Reduction of pyruvic acid
290What are the factors that are essential
for photosynthesis?
291Autoradiography technique was used
A. trace the path of carbon in photosynthesis
B. establish that the oxygen evolved during phtosynthesis is by photolysis of water molecule.
C. study photorespiration in certain plants.
D. find out the absorption maximum of chlorophyll pigments.
292Linnaeus described 5900 species of
plants in his book
(1753) and 4326 species of animals in
his book
A. Philosophia Botanica, Genera Plantarum
c. systema Naturae, Species Plantarum
D. species Plantarum, systema Naturae
293Choose the correct answer from the
alternatives given
What are the products of photosynthesis
A. Water and carbon dioxide
B. Water and oxygen
c. Oxygen and carbohydrate
D. Carbohydrate and water
294Choose the correct answer out the given options.10
295Blood pressure is defined as the force with which blood
A. Comes out of the atrium
B. Is pushed to the legs
c. Pushes against wall of blood vessels
D. comes out of the ventricle
296of green plants are called factories of food production.
A. Mitochondria
B. Chloroplasts
c. Endoplasmic- recticulum
D. Nucleus
2972 NADH ( left(boldsymbol{H}^{+}right) ) produced during anaerobic glycolysis yield
A. 6 ATP molecules
B. 4 ATP molecules
c. 8 ATP molecules
D. None of the above
298Present day view regarding
photosynthesis is
A. It converts light energy into chemical energy
B. It creates useful energy
( mathrm{C} cdot ) It fixes ( mathrm{CO}_{2} ) into carbohydrates
D. It reverses the action of respiration
299What is nutrition? What type of
nutrition is seen in green plants and the majority of animals?
300involves in the intake of complex material prepared by other organisms.
A. Heterotrophic nutrition
B. Autotrophic nutrition
c. chemotrophic nutrtion
D. Photototrophic nutrition
301All animals and fungi are autotrophs.
A. True
B. False
302The factor which is not limiting in normal conditions for photosynthesis is
A. water
B. chlorophyll
c. light
D. carbon dioxide
303How many additional ATP are used during synthesis of two molecules of hexose sugar in maize than tomato?
A . 12
B . 36
c. 24
D. 8
304The molecular weight of chlorophyll ( alpha ) is
A . 907
B. 893
c. 91
D. 712
305During strenuous exercise, which of the following changes occur?
A. Glucose is converted into glycogen
B. Glucose is converted into pyruvic acid
c. starch is converted into glucose
D. Pyruvic acid is converted into lactic acid
306Define autotrophs.10
307Look at the following figure of
chloroplast and choose the correct
combination of statements.
. Light reaction of photosynthesis
occurs in ( Y )
ii. Dark reaction of photosynthesis
occurs in ( x )
iii. ( X ) is known as thalakoid.
¡v. Y is known as granum.
v. ( Z ) is known as granum.
( A ). i, ii, and iv
B. ii, iii, and iv
c. iii, iv and ( v )
D. ii, iii, iv, and v
308The normal systolic and diastolic
pressure in human beings is
A. ( 80 / 120 mathrm{mm} ) of ( mathrm{Hg} )
B. 130/90 mm of Hg
c. ( 120 / 80 mathrm{mm} ) of ( mathrm{Hg} )
D. 140/80 mm of Hg
309Where did the grinding of food in
310How do the following structures help in respiration in plants?
(a) Lenticels
(b) Stomata
(c) Root hairs
311Which of the following statements is
true about the process shown in the given box?
[Food ( + ) Oxygen ( rightarrow ) Carbon dioxide ( + ) Water ( +text { Energy }] )
A. It is caused by the decay of organic substances.
B. It is an important process in the nitrogen cycle.
C. It is an essential process of aerobic respiration in living organisms.
D. It Is carried out only by green plants and certain type of bacteria.
312Pitcher is found in
A. Dionaea
B. Drosera
c. Nepenthes
D. Viscum
313Which of these is a part of your digestive system?
A. Stomach
B. Pancreas
c. Rectum
D. All of the above.
314The digestion in amoeba can be defined
A. Intracellular
B. Extracellular
c. secretory
D. Both A and B
315A leaf which possesses stomata exclusively on its upper surface is called as
A. Oat type
B. Mulberry type
c. Lotus type
D. cactus type
316Select odd one(w.r.t. heterotrophic
A. Saprophytic bacteria
B. Chemosynthetic bacteria
c. Parasitic bacteria
D. symbiotic bacteria
317Refer to the given figure. Select the
correct statement regarding the
labelled parts A-C.
A. The inner wall of B towards C is thick and elastic
B. The opening and closing of the stomata is due to change in the turgidity of B
C. The opening of the stoma is aided due to the orientation of A in the cell walls of B
D. All of these
318Write the special characteristics/features of the human
digestive system
319The organisms shown in figure can be
grouped into two separate groups
based on their mode of nutrition
Which of the following options is correct
regarding this?
A. ( P ) is an autotroph whereas ( Q ), ( R ) and ( S ) are heterotrophs.
B. P show intracellular digestion while ( Q ), R and S show extracellular digestion.
C. ( P ) and ( Q ) are autotrophs while ( R ) and ( S ) are heterotrophs.
D. P shows intracellular digestion while ( Q ), R and S show extracellular digestion.
320Sanguivores are
A. Animals which mainly depend on fruits
B. Animals which feed on the blood of other animals
C. Animals which feed on organic matter present in soil
D. Insect eating animals
321Animals show locomotion but plants do
“What is the reason for this?
A. Plants are autotrophs
B. Plants are heterotrophs
c. Plants have organs of defence
D. None of these
322Glucose, synthesized in leaves are
transported in the form of
A. Starch
B. Sucrose
c. Fructose
D. carbon dioxide
323List the steps of preparation of temporary mount of a leaf peel to observe stomata.10
324Photolithotrophs (photoautotrophs)
obtain energy from
A. Radiations and carbon from inorganic compounds
B. Radiations and carbon from organic compounds
C . Organic compounds
D. Inorganic compounds
325Choose the correct answer from the
alternatives given.
In most plants carbohydrate is transported from leaves, where it is synthesized, to other parts, where it is
used, in the form of
A. sucrose
B. fructose
c. maltose
D. starch
326Which one of the following are not essential for opening of stomata?
A. Cytokinin
B. Temperature
c. Mechanical shock
D. Rise in ( mathrm{pH} )
327Very short answer type. How much blood is in each ventricle at
the end of ventricular diastole and what
is this volume called?
328What are the characteristic features of
an artery?
A. Have thick elastic, muscular walls
B. Have thin, non-elastic walls
c. Carry blood from heart to all body parts
D. Both A and C
329The process of taking in ( C O_{2} ) by plants
and releasing ( O_{2} ) is component of
A. Transpiration
B. Respiration
c. Endosmosis
D. Photosynthesis
330Arteries of mummies were found to be
well preserved due to
A. Reticular fibres
B. Collagen fibres
c. Elastin fibres
D. Myofibrils
331On an average, for every ( C O_{2} ) molecule
fixed by photosynthesis, how many molecules of oxygen are released?
B. 2
( c cdot 3 )
D. 6
332Choose the correct combination of
labelling of stomatal apparatus of dicot
and monocot leaves.
A. A-epidermal cells, B-subsidiary cells, C-chloroplast, D-guard cells, E-stomatal aperture
B. A-epidermal cells, B-guard cells, C-chloroplast, Dsubsidiary cells, E-stomatal aperture
C. A-epidermal cells, B-subsidiary cells, C-chloroplast,
D-stomatal cells, E-guard cells
D. A-subsidiary cells, B-epidermal cells, C-chloroplast,
D-stomatal aperture, E-guard cells
E. A-guard cells, B-epidermal cells, C-stomatal aperture, D-subsidiary cells, E-chloroplast
333What tube is used by both the digestive and respiratory systems?
A. Esophagus
B. Larynx
c. Pharynx
D. None of these.
334Blood pressure is measured with an
instrument called as
A. Spirometer
B. Sphygmomanometer
c. Perometer
D. None of the above
335An enzyme that converts disaccharides to monosaccharides is
A. Lactase
B. Kinase
c. zymogen
D. Lipase
E. Phosphatase
336Very short answer type.
What is the volume of blood in the
human body?
337Why is diffusion insufficient to meet
the oxygen requirements of multicellular organisms like humans?
338What are the characteristics
of heterotrophic nutrition?
A. Organisms posses chlorophyll.
B. Organisms are able to build up their own organic food from raw materials.
C. Organisms can not make their own food.
D. None of the above.
339Light energy is changed into chemical
energy during the process of
A. respiration
B. transpiration
c. photosynthesis
D. digestion
340Plants take in ( ldots ) and give
A. Oxygen, Carbon dioxide
B. Carbon dioxide, Oxygen
c. Oxygen, Nitrogen
D. None of the above
341Explain with the neat labelled diagram
of the structure of Stomata.
342Choose the correct answer from the
alternatives given Blood pressure is high in and lowest in
A. Arteries; veins
B. Arteries; ventricles
C. Arteries; relaxed atria
D. Arterioles; veins
343One gram mole of glucose on complete
oxidation to ( C O_{2} ) and ( H_{2} O ) produces
A .6,86,000 Cal
B. 6,860 Cal
c. 68,600 Cal
D. 68,60,000 Cal
344The reabsorption of the sodium from glomerular filtrate is regulated by the hormone
A. Glucagon
B. Secretin
c. Aldosterone
D. Adrenaline
345Usually the process of photosynthesis is
A. Slower than respiration
B. Faster than respiration
c. Equal to respiration
D. None of the above
346f there was no photosynthesis what would happen?10
347Find out which one is not related to
A. Photosynthesis
B. Respiration
c. Transpiration
D. Transportation
348What will be the effect on phytochrome in a plant subjected to continuous red light
A . Level of phytochrome will decrease
B. Phytochrome will be destroyed
c. Phytochrome synthesis will increase
D. None of these
349By which of the following processes ATP
is produced?
I. Photosynthesis
Il. Aerobic respiration
III. Anaerobic respiration
A. I only
B. II only
C. I and III only
D. II and III only
E . I, II, and III
350Which of the following may show photosynthesis in moonlight
A. some thermal algae
B. some marine algae
c. some fresh water algae
D. None of the above
351How is the food taken and digested in Amoeba and Paramecium?10
352An epistomatic leaf is?
A. Sunflower
B. Maize
c. Nymphaea
D. calotropis
353Which one of the following is not a photosynthetic diazotroph.
A. Nostoc
B. Frankia
c. Anabaena
D. Rhodospirillum
354( (A) )
(i) Opening and closing of Scotoactive
stomata photoactive stomata
(B) Guttation
(ii) Transpiration
(iii) Water loss in liquid phase strength
(D) ( mathrm{K}^{+} ) pump
(iv) Night transpiration theory
Match the above columns and choose the
correct combination.
( A cdot A-(i v), B-(i i i), C-(i i), D-(i) )
B. ( A-(text { iv }), B-(i), C-(i i), D-(i i i) )
C ( . A- ) (iii), B- (iv), C- (i), D- (ii)
D. A- (iii), B- (i), C- (iv), D- (ii)
355Organisms that cannot prepare their own food are called as
A. Autotrophs
B. Heterotrophs
c. Algae
D. None of the above
356What processes would be considered essential for maintaining life?
A. Nutrition and metabolism
B. Respiration and exchange of materials
c. Transportation and excretion
D. All of the above
357Consider the following pairs.
Intake and utilization of
A. Nutrition
– nutrients for energy requirements
Derives nutrition from
B. Saprophytes – dead organic
Animals and
c. Heterotrophs
D. Chemotrophic ( mathrm{N}_{2} ) fixing bacteria
The correctly paired groups are given in
( A cdot A, B ) and ( C )
B. B, C and D
C. ( A, B, C ) and ( D )
D. ( A, C ) and ( D )
358Which of the following structures helps in the release of excretory gases like carbon dioxide, in plants?
A. Root hair
B. Stomata
c. Lenticels
D. None of the above
359Write the parts of human digestive
360Which of the following is the main purpose of respiration in plants?
A. Breaking of complex food into simple ones
B. Production of energy
c. Exchange of gases
D. Both A and B
361Which of the following is not a characteristic of good respiratory
A. Thin and moist
B. Large surface area
c. close to oxygen and gas transporttt
D. Thick and dry surface
362What role does light play in photosynthesis?
A. Provides heat energy for leaves to convert into light energy
B. Excites electron from carotene which is taken up for photophosphorylation
c. catalyse synthesis of ATP
D. Both A and B
363Give two examples of root parasites of plants. Mention the special structures present in them to draw the nutrients
from the host plant.
364In apple type of stomata
A. Stomata are present only on the upper surface of leaf
B. Stomata are present only on the lower surface of leaf
C. Stomata are present on both surface of leaf
D. Stomata are vestigial
365Which of the following statements is
A. Mammals have the ability to produce concentrated urine
B. Counter current is due to the flow of filtrate in two limbs of Henle’s Loop in opposite direction.
C. Henle’s loop and vasa recta play a significant role in concentrating the urine.
D. Flow of fitrate through vasa recta also follow the counter current pattern.
366Q Type your question
to determine the effect of each
substance on normal body variables. An
appropriate amount of time was allowed between injections and the
substances did not interfere with one
Baseline after Variable ( quad ) injecting values ( quad ) substance
( mathbf{A} )
C a^{+}
( 2.3 mathrm{mmol} / mathrm{L} )
( 2.3 mathrm{mmol} / mathrm{L} )
Serum ( quad 135 mathrm{mmol} / mathrm{L} quad 135 mathrm{mmol} / mathrm{L} )
( N a^{+} )
Serum ( quad 5.6 mathrm{mmol} / mathrm{L} quad 3.3 mathrm{mmol} / mathrm{L} quad 5.6 mathrm{n} )
The normal release of substance D will
A. Soon after a meal.
B. When blood pressure is low.
C . Between meals.
D. When there has been limited intake of dietary calcium.
E. When dietary calcium is in excess.
Oxidation of one molecule of NADH
gives rise to 3 molecules of ATP and
that of one molecule of ( boldsymbol{F A D H}_{2} )
produces 2 molecules of ATP.

The number of ATP molecules
synthesised depends on the nature of the electron donor.
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

368Which one of the following statement is
correct regarding blood pressure?
A. ( 190 / 110 mathrm{mm} ) Hg may harm vital organs like brain and kidney
B. ( 130 / 90 mathrm{mm} ) Hg is considered high and requires treatment
C. ( 100 / 55 mathrm{mm} ) Hg is considered and ideal blood pressure
D. ( 105 / 50 mathrm{mm} ) Hg makes one very active
369Give the path of movement of ( C O_{2} ) from
air to a mesophyll cell of the leaf
370The type of epithelium seen in the walls
of blood vessels is
A. Squamous epithelium
B. Columnar epithelium
c. ciliated epithelium
D. Cuboidal epithelium
E. Compound epithelium
371The main waste products of plants are
( A cdot C O_{2} ) and ( N O_{2} )
B. ( mathrm{cO}_{2} ) and water vapour.
( mathrm{c} cdot mathrm{co}_{2}, mathrm{O}_{2} ) and water vapour
D. None of the above
372What is the difference between
anaerobic & aerobic respiration? Name some organism that uses the aerobic mode of respiration?
373Describe the process of respiration in the following part of a plant.
374The correct explanation of the
organisms is
( begin{array}{llll} & text { A } & text { B } & text { c } \ text { a) } & text { Saprophyte } & text { Heterotrophs } & text { Autotrop } \ text { b) } & text { Heterotrophs } & text { Autotrophs } & text { Saproph } \ text { c) } & text { Autotrophs } & text { Saprophyte } & text { Autotrop } \ text { d) } & text { Autotrophs } & text { Heterotrophs } & text { Heterotrc }end{array} )
375Name any four life processes in living
376of green plants are called factories
of food production.
A. Mitochondria
B. Chloroplasts
c. Endoplasmic reticulum
D. Nucleus
377Human organism is an internal
combustion machine because of
A. Assimilation of energy from food
B. Liberate ( C O_{2} ) during respiration
C. Expel waste food at the end state digestion
D. Secrete powerful digestive juices
378Select the correct option:
Stomata are distributed more on the
lower surface than on the upper surface in
A. Equifacial leaf
B. Bifacial leaf
c. Unifacial leaf
D. Both A and B
379Aphids with the help of
absorbs nutrients from the phloem of
the plants.
380(a) What is the function of acid in
(b) What is the difference between
autotrophic nutrition and heterotrophic nutrition?
381Which of the following processes is responsible for the release of oxygen?
I. Lactic acid fermentation
II. Alcohol fermentation
III. Aerobic respiration
IV. Photosynthesis
A . I and II
B. I and III
c. ॥ only
D. IV only
E . III and IV
382Saprophytic angiosperms are also
A. Mycorrhizal plants
B. Mesophytic plants
C. Humus plants
D. Myrmecophilous plants
383How many organisms in the list given below are autotrophs? Lactobacillus, Nostoc, Chara, Nitrosomonas Nitrobacter, Streptomyces, Sacharomyces Trypanosoma, Porphyra, Wolfia
A . Five
B. Six
c. Three
D. Four
384The reason of psuedopodium formation
A. Difference in the viscosity
B. change in the temprature
c. chemical changes
D. Difference in pressure
385Abbreviation BMR in biology stands for
A. Birth mortality rate
B. Basal metabolic rate
C. Bone marrow regeneration
D. All of the above
386Give reason –
a) Muscular floor of chest cavity
b) Tiny pores on the surface of leaf.
387Explain the process of digestion in human beings.10
388Which of the following is a partial root parasite?
A. Sandal wood
B. Mistetone
c. orobanche
D. Ganodema
389Match the names of the special cells
with the names of the organs / parts in which they occur. Choose the answer,
which gives the correct combinations of the alphabets of the two columns.
A. Cellsof Von ( quad ) p. Small intestine Kupffer
q. Proximal convolutec
в. ( beta ) cells ( quad ) tubules
Brush border cells
D. Paneth cells
t. Islets of Langerhans
A. ( A-r, B-p, C-t, D-q )
в. ( A-r, B-t, C-p, D-q )
c. ( A-r, B-s, C-q, D-p )
D. ( A-r, B-t, C-q, D-p )
39037. Which one of the following is the
ideal food for newborn babies ?
(1) Water (2) Sugar
(3) Honey (4) Milk
391Which is true about Trypanosoma
A. Polymorphic
B. Monogenetic
C. Facultative parasite
D. Non-pathogenic
392Plants are called
they fix carbon dioxide.
393Photosynthesis in an aquatic plant was
measured by counting the number of
( O_{2} ) bubbles coming out of the cut end of
the plant. What will happen to ( boldsymbol{O}_{2} )
production if you use a pipe blow air
from your mouth into water in the beaker?
A. Air from mouth contains ( O_{2} ) which is being added to
the plant, hence increase in ( O_{2} ) production.
B. Air from mouth contains ( C O_{2} ) which is utilised in
photosynthesis, hence increase in ( O_{2} ) production.
C. Bacteria from mouth will infect plant, hence reduction ( operatorname{in} O_{2} ) production.
D. Water is already in contact with air, hence air from mouth will have no effect.
394Vanda plant is a/an
A. Total parasite.
B. Partial parasite.
c. Epiphyte.
D. saprophyte.
395State whether the following statements are True or False. Rewrite the false
statements correctly. Transpiration is the loss of water from the roots of the plant.
A. True
B. False
39637. In the human body, which of the
following organs is responsible
for water balance ?
(1) Heart (2Liver
(3) Kidneys (4) Lungs
397How plant respiration is different from animal respiration. Describe the process of respiration in
(a) root
(b) stem
(c) leaves with suitable diagram.
398In Amoeba, cell membrane help in engulfing the food during the process called as endocytosis10
399What is Autotrophic nutrition? Give one example.10
400The metal ion involved in the stomatal
regulation is
A. Iron
B. Magnesium
c. zinc
D. Potassium
401What is the characteristic of haustorial
roots of cuscuta?
A. Presence of both xylem and phloem
B. Presence of only xylem
c. Presence of phloem
D. Absence of both xylem and phloem
402The instrument by which blood pressure of a man can be determined is
A. Ultrasound
B. Blood pressure meter
c. stethoscope
D. sphygmomanometer
403Mention the respiratory quotient(RQ)
values for carbohydrates, fats and
proteins during aerobic respiration.
404Blood pressure and heart beat is regulated by
A . Insulin
B. Adrenalin
c. optic nerve
D. Growth hormone
405Anabaena azollae is present in the roots of Azolla.10
406The food we take in our body travels through a long and complex path. Which starts from mouth to anus. Which is the
correct sequence of process on food in the digestive system?
A. Digestion ( rightarrow ) Absorption ( rightarrow ) Egestion ( rightarrow ) Ingestion
B. Ingestion ( rightarrow ) Egestion ( rightarrow ) Digestion ( rightarrow ) Absorption
c. Digestion ( rightarrow ) Ingestion ( rightarrow ) Absorption ( rightarrow ) Egestion
D. Ingestion ( rightarrow ) Digestion ( rightarrow ) Absorption ( rightarrow ) Egestion
407A ring of smooth muscles present
between the stomach and the
duodenum is
A. Cardiac Sphincter
B. Pyloric Sphincter
c. Ileocaecal valve
D. Anal Sphincter
408Very Short Answer Type:
Define wall pressure.
409Define autotrophic nutrition10
Saline water is not given to patients with hypertension.
Saline water can cause vomiting and may drop blood pressure suddenly causing cardiac arrest.
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
411Function of torus is to
A. Regulate water conduction
B. Stop water conduction
C. Inhibit water conduction
D. Help in water absorption
412What moves the food in the digestive organs? What is the other name for the
food pipe?
413Primary process in photosynthesis leads to the conversion of light energy
into chemical energy. Discuss the statement.
414Explain the process of digestion in
415Stomata of CAM plants
A. Are always open
B. Open during the day and close at night
C . Open during the night and close during the day
D. Never open
Given below are chemical reactions 11 to
5) involving glucose and five other chemical products. ( (A-E) )

Write the reaction number of the
Anaerobic respiration in animals

417Chemosynthesis and photosynthesis
are alike as they both
A. Are associated with heterotroph
B. Require sunlight as an energy source
c. Use method of autotrophic nutrition
D. Occurin tracheophytes

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