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question_answer1)
Select the group in which the odd one out is circled incorrectly.
A)
B)
C)
D)
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question_answer2)
Food chains generally do not exceed above 3, 4 trophic levels because ____.
A)
There are limited number of organisms in an ecosystem done
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B)
Larger food chains increase complications of food web done
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C)
A producer cannot be eaten by more than two herbivores done
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D)
Transfer of energy from one trophic level to other is associated with energy loss done
clear
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question_answer3)
The pyramid shown here can be the pyramid of _____.
A)
Biomass in a forest done
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B)
Energy in a grassland done
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C)
Number in a pond done
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D)
Biomass in pond ecosystem done
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question_answer4)
What does the given flowchart represent?
Producers
|
\[\to \]
|
Herbivores
|
\[\to \]
|
Carnivores
|
20 units
|
|
2 units
|
|
0.2 units
|
A)
Unidirectional energy flow done
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B)
Lindeman's law done
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C)
Biomagnification done
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D)
Both (A) and (B) done
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question_answer5)
Apyramid of____can never be inverted.
A)
Energy done
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B)
Biomass done
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C)
Productivity done
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D)
Number done
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question_answer6)
Select the option that contains only biodegradable wastes.
A)
Orange peel, Credit card, Roti done
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B)
Cotton cloth, Mango fruit, Gold foil done
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C)
Tin can, Keyboard, Plastic bag done
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D)
Silk scarf, Mouldy bread, Newspaper done
clear
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question_answer7)
Use of high temperature for waste disposal is called _____.
A)
Composting done
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B)
Land filling done
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C)
Recycling done
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D)
Incineration done
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question_answer8)
Match column I with column II and select the correct option from the codes given below.
Column I |
Column II |
(a) Herbivores |
(i) Orobanche |
(b) Producers |
(ii) Hippopotamus |
(c) Carnivores |
(iii) Crocodile |
(d) Omnivores |
(iv) Cyanobacteria |
(e) Parasites |
(v) Ant |
|
(vi) Phytoplanktons |
|
(vii) Tortoise |
|
(viii) Kingfisher |
A)
B)
C)
D)
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question_answer9)
Which of the following statements about food chain are correct?
(i) It includes repeated eating i.e., each group eats the other and is subsequently eaten by some other group of organisms. |
(ii) It shows a series of branching lines and unidirectional flow of energy. |
(iii) It shows the unidirectional flow of energy and proceeds in a progressive straight line. |
(iv) It may consists of more than ten trophic levels depending upon the type of ecosystem. |
A)
(i) and (ii) only done
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B)
(i) and (iii) only done
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C)
(ii) and (iv) only done
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D)
(i),(iii) and (iv) only done
clear
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question_answer10)
Which of the following activities will help to sustain environmental balance?
(i) Usage of platinum jewellery as it will reduce the load on gold mines. |
(ii) Farming as it helps to ensure that man does not eat up all the food producers. |
(iii) Use of synthetic leather as it reduces the number of animals being killed for their skin. |
(iv) Using nuclear energy as it provides an alternative to fossil fuels. |
A)
(ii), (iii) and (iv) done
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B)
(i), (ii) and (iv) done
clear
C)
(ii) and (iv) done
clear
D)
(iii) only done
clear
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question_answer11)
Which among the following are the artificial ecosystems?
(i) Estuaries |
(ii) Mountain |
(iii) Crop field |
(iv) Grassland |
(v) Coral reefs |
(vi) Park |
(vii) Mangroves |
(viii) Aquarium |
A)
(i), (ii) and (v) only done
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B)
(ii), (iv) and (vi) only done
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C)
(iii), (vi) and (viii) only done
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D)
(ii), (vi) and (vii) only done
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question_answer12)
Match column I with column II and select the correct option from the codes given below.
Column I | Column II |
(a) Montreal Protocol | (i) 1992 |
(b) Ganga Action Plan | (ii) 1973 |
(c) Chipko Movement | (iii) 1986 |
(d) First Earth Summit | (iv) 1987 |
A)
(a)-(i), (b)-(iii), (c)-(ii), (d)-(iv) done
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B)
(a)-(i), (b)-(ii), (c)-(iii), (d)-(iv) done
clear
C)
(a)-(iv), (b)-(iii), (c)-(ii), (d)-(i) done
clear
D)
(a)-(i), (b)-(ii), (c)-(iv), (d)-(iii) done
clear
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question_answer13)
The main purpose of water harvesting is not to hold rainwater on the surface of the Earth but to make rainwater percolate under the ground so as to recharge ground water. Which of the following sentences are true for water stored in the ground?
(i) It does not evaporate. |
(ii) It spreads out to recharge wells and provides moisture for crops over a wide area. |
(iii) It does not promote breeding of mosquitoes. |
(iv) It is protected from contamination by human and animal wastes. |
(v) It is utilized for benefit of the local population. |
A)
(i), (ii) and (iii) only done
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B)
(i), (iii) and (v) only done
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C)
(ii), (iii) and (iv) only done
clear
D)
(i), (ii), (iii), (iv) and (v) done
clear
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question_answer14)
Two types of animals, P and Q, were placed in a confined research area with sufficient water and plants for the consumption of animals. The given graph is plotted after observing animals over a period of time. Which of the following is incorrect regarding this?
A)
Animal P comes under the category of prey. done
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B)
Animal Q comes under the category of predator. done
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C)
Animal Q is carnivore and animal P is herbivore. done
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D)
All of these done
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question_answer15)
Select the incorrect statement.
A)
Economic development is linked to environmental conservation. done
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B)
Sustainable development encourages development for current generation and conservation of resources for future generations. done
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C)
Sustainable development does not consider the view points of stakeholders. done
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D)
Sustainable development is a long, planned and persistent development. done
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question_answer16)
The given diagram shows part of a food web. Which of the following represents a pyramid of biomass based on the given food web?
A)
B)
C)
D)
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question_answer17)
The table below lists some information about the trophic levels of a food chain.
Trophic level |
Number of organisms |
Energy in the trophic level (arbitrary units) |
P |
100 |
10,000 |
Q |
1 |
100 |
R |
1000 |
100,000 |
S |
10 |
1000 |
Which of the following food chains is correct?
A)
\[P\to Q\to R\to S\] done
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B)
\[P\to S\to Q\to R\] done
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C)
\[R\to P\to S\to Q\] done
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D)
\[R\to Q\to S\to P\] done
clear
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question_answer18)
The given figure shows a food web in a forest area. In the forest, large amount of insecticides are blown with wind from a nearby field. What will be the effect on the given food web?
A)
Increase in the number of sparrows done
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B)
Increase in the number of frogs done
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C)
Greater reduction in the number of hawks than in the number of caterpillars done
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D)
Greater reduction in the number of caterpillars than in the number of flies done
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question_answer19)
Study the given food web. Which of the following would lead to decrease in the water snail population?
P. Increase in Hydrilla population |
Q. Increase in tadpole population |
R. Decrease in kingfisher population |
S. Increase in dragonfly nymphs population |
A)
Q only done
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B)
P and R only done
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C)
Q, R and S only done
clear
D)
S only done
clear
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question_answer20)
The pH level of precipitation at two places X and Y was found to be as shown in graph. Which of the following can you deduce from it?
A)
Marble statues at place X can be seen yellowing. done
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B)
Plants at place Y can be seen to have burnt yellow looking leaves. done
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C)
At place X there is higher consumption of fossil fuels. done
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D)
At place Y, renewable energy sources are fastly replacing the use of conventional energy sources. done
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