Our Environment Questions

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

Our Environment Questions

List of our environment Questions

Question NoQuestionsClass
1Study the food web given and answer the question
Which of the following organisms in the
given food web act both as a predator
and a prey?
A. I, II and IV
B. II, III and IV
c. ॥, ॥ा, v, vı and vı
D. II, III and vı
10
2Biotic components include
A. Only producers
B. Producers, consumers and decomposers
c. Only consumers
D. only producers and consumers
10
3Catterpillar, Snake, Owl Frog, Green
leaves.
10
4Organisms which breakdown dead or waste matter in to simpler substances
is termed as
A. Producers
B. Consumers
c. Decomposers
D. Scavengers
10
544. Biodegradable wastes can usu-
ally be converted into useful sub-
stances with the help of
(1) Bacteria
(2) Nuclear proteins
(3) Radioactive substances
(4) Viruses
10
6Biodegradable pollutant is
A. Plastic
B. Asbestors
c. sewage
D. Mercury
10
7When we study the full assortment of organisms in an area as well as the abiotic environment that affects them,
we are studying the
A. populations
B. niche
c. ecosystem
D. community
10
8Which of the following pollutant is released in larger quantity from the exhaust emission of a petrol/diesel automobile?
A . ( c o )
B. ( mathrm{cO}_{2} )
c. ( mathrm{NO}_{2}, mathrm{SO}_{2} ) and ( mathrm{Pb} )
D. Hydrocarbons
10
9Which of the following is the consequence of man’s interference with
nature?
A. Increase in natural resources
B. Biological imbalance
c. Increase in the ozone layer
D. All of the above
10
10Which of the following is false about food chain?
A. Grazing food chain is major conduit of energy for aquatic ecosystem.
B. In terrestrial ecosystem, large fraction of energy flows through detritus food chain
C. Primary consumers belong to first trophic level
D. Detritus food chain begins with dead organic matter.
E. Cockroaches and crows are omnivores
10
11A non-biodegradable toxic chemical has entered into the food chain. Which type
of food habit will you suggest to a man, vegetarian or non-vegetarian? Explain with the help of a food chain. The food
chain which you would suggest, is
advantageous in an another aspect. How?
10
12Study of interaction between living organisms and environment is called
A. Ecosystem
B. Phytogeography
c. Psychology
D. Mycology
10
13Which one is non-biodegradable?
A . DDT
B. Sewage
c. Livestock waste
D. Market garbage
10
14What of the following statements is
correct?
A. Benzene hexachloride is non-biodegradable pollutant.
B. Anthropogenic air pollutants are natural in origin.
C. Carbon monoxide is a primary air pollutant.
D. ( mathrm{SO}_{2} ) causes brown air effect during traffic congestion
in cities.
10
15Why we should try to preserve the biodiversity we have inherited?10
16The term ecosystem was coined by
A. E.P. Odum
B. A.G. Tansley
c. E. Haeckel
D. E. Warming
10
17Assertion
Human regulated environment is also
called noosphere.
Reason
Man is the main cause for pollution in
our ecosystem due to exploitation of
natural resources.
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.
10
18Match the following and choose the correct combination from the options
given
( begin{array}{llll} & text { Column I } & & text { Column II } \ text { A } & text { DDT } & 1 & text { N0 }_{x} text { , CO } \ text { B } & text { PAN } & 2 & text { Smog } \ text { C } & text { Acid rain } & 3 & begin{array}{l}text { Biological } \ text { magnification }end{array} \ text { D } & begin{array}{l}text { Global } \ text { warming }end{array} & 4 & text { so }_{2}end{array} )
A. A- ( 4, ) B- ( 3, ) C- ( 2, ) D-
B. A-1, B- 3, C- 2, D-4
c. ( A-2, B-3, C-4, D-1 )
D. A- 3, B-2, C-4
10
19The fundamental purpose of is
to describe feeding relationship among species in a community.
10
20components comprising physical factors like temperature, rainfall, wind, soil and minerals10
21Define an ecosystem. Explain it with a suitable example.10
22Which one of the following pairs is
mismatched?
A. Fossil fuel burning – release of ( C O_{2} )
B. Nuclear power – radioactive wastes
C. Solar energy – Greenhouse effect
D. Biomass burning – release of ( C O_{2} )
10
23By which method should the domestic
garbage be disposed?
10
24Spraying of DDT on crops produces pollution of
A. Soil and water only
B. Air and soil only
c. Air, soil and water
D. Air and water only
10
25Mention any two examples of anthropogenic acid. Distinguish
between homozygous and heterozygous
plants.
10
26Which of the following is an example of biodegradable waste?
A . Glass
B. Metal
c. Plastic
D. Fruits
10
27The proposal to ban supersonic jet planes in Russia is because
A) They travel with very high speed.
B) It is dangerous to travel in them.
C) Their exhaust gases react with ozone
( A cdot A & B )
B. B
( c cdot c )
D. ( A, B & C )
10
28Mention the harmful effect caused due
to depletion of ozone layer that is Bioamplification?
10
29Pollutants directly emanating from human activities are.
A. Quantitative pollutants
B. Qualitative pollutants
c. Air pollutants
D. water pollutants
10
30Most harmful type of environmental pollutants are
A. Human organic wastes
B. Natural nutrients in excess
c. waste animal feed
D. Non-biodegradable chemicals
10
31Which term is used for pollutants which degrade naturally?10
3248. Gas released during Bhopal trag-
edy was :
(1) Sodium isothiocyanate
(2) Potassium isothiocyanate
(3) Ethyl isothiocyanate
(4) Methyl isothiocyanate
10
33Which of the following materials are non-biodegradable?
A. Plastic mugs
B. Egg shell
c. Leather belt
D. Both A and C
10
34Define an ecosystem. Draw a block diagram to show the flow of energy in an
ecosystem.
10
35Pollen, bacteria, fungal spores are also pollutants.
A. True
B. False
10
36Major pollution causing agent is
( A cdot ) Man
B. Animals
C. Hydrocarbon gases
D. None of the above
10
37Each step in a food chain is called a
A. trophical level.
B. consumer level.
( c . ) food web.
D. producer.
10
38An ecosystem consists of components comprising living organisms10
39A very large area that contains a variety of natural and traditionally managed ecosystem is called?10
40Observe the figure and answer the given
questions.
Trance the path from seeds to Hawk
10
41Given graph represents the response of organisms to various abiotic factors. On
this basis, select the correct option for
(i), (ii) and (iii)
A. Conformers Regulators Partial regulators
B. Regulators Partial regulators Conformers
c. Partial regulators Regulators Conformers
D. Regulators Conformers Partial regulators
10
42Which one is the correct food chain?
A. Eagle ( rightarrow ) Snake ( rightarrow ) Grasshopper ( rightarrow ) Grass ( rightarrow ) Frog
B. Frog ( rightarrow ) Snake ( rightarrow ) Eagle ( rightarrow ) Grasshopper ( rightarrow ) Grass
C. Grasshopper ( rightarrow ) Grass ( rightarrow ) Snake ( rightarrow ) Frog ( rightarrow ) Eagle
D. Grass ( rightarrow ) Grasshopper ( rightarrow ) Frog ( rightarrow ) Snake ( rightarrow ) Eagle
10
43Most atmospheric pollutants do not rise above.
( mathbf{A} cdot 600 mathrm{m} )
B. 1000m
c. ( 2000 mathrm{m} )
D. 200m
10
44What do you meant by ecosystem?10
45Atmospheric pollutants formed by human activities constitute of the total
of
A . ( 95 % )
B. ( 75 % )
( c .25 % )
D. ( 0.05 % )
10
46Complete the following food chain with
the appropriate component Grass – grasshopper – ………. – snake
10
47Which one of the following is mainly responsible for depletion of ozone layer?
A. Methane
B. Carbon dioxide
c. water
D. chlorofluorocarbon
10
48A partial food web is shown here:
Which of the following changes is most
likely to occur if the sparrow population
decreases?
A. The fox population increases.
B. The hawk population increases
c. The grasshopper population competes less with the praying mantis
D. The hawk population and the fox population prey more heavily on rabbit
10
49Which of the following practices adversely effect the environment?
A. Aeration
B. Ploughing
c. weeding
D. None of the above
10
50What are trophic levels? Give an
example of a food chain and state the different trophic levels in it.
10
51What are the problems caused by the non-biodegradable wastes that we generate?10
52Study the following lists.
ListList-II
(A) A. G
(I) Classified plant communities tansley
(II) Structure and function of
(B) Wanning
(C) Odum
(III) Term ‘Biosphere’
(D) Reiter
(IV) Term’ Ecology’
(V) Term’Ecosystem’
Identify the sequence of list II with
respect to list I
A. A- (II), B- (V), C- (I), D- (III)
B. A-(IV),B-(III), C-(V),D- (II)
( c cdot A-(1 V), B-(111), C-(V), D-(1) )
D. ( A-(V), B-(1), C-(11), D-(1 V) )
10
53Ecosystem is an interacting system
made up of
A. Consumers and their physical surroundings
B. Producer and consumers
C. Producer and their physical surroundings
D. Organisms and their physical surroundings
10
5410
55Contamination found in natural
environment is called as
A. Sewage
B. Distortion
c. spoilage
D. Pollution
10

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