1) Consider the following pairs:
- Nokrek Bio-sphere Reserve : Garo Hills
- Logtak (Loktak) Lake : Barail Range
- Namdapha National Park : Dafla Hills
Which of the above pairs is/are correctly matched?
- 1 only
- 2 and 3 only
- 1, 2 and 3
- None
- Corbett National Park: Ganga
- Kaziranga National Park: Manas
- Silent Valley National Park: Kaveri
Which of the above pairs is/are correctly matched?
- 1 and 2
- 3 only
- 1 and 3
- None
- Tamil Nadu
- Kerala
- Karnataka
- Andhra Pradesh
Select the correct answer using the codes given below.
- 1, 2 and 3 only
- 2 only
- 1, 3 and 4 only
- 1, 2, 3 and 4
4) In the grasslands, trees do not replace the grasses as a part of an ecological succession because of
- insects and fungi
- limited sunlight and paucity of nutrients
- water limits and fire
- None of the above
5) Which one of the following is the correct sequence of ecosystems in the order of decreasing productivity?
- Oceans, lakes, grasslands, mangroves
- Mangroves, oceans, grasslands, lakes
- Mangroves, grasslands, lakes, oceans
- Oceans, mangroves, lakes, grasslands
- Beryllium
- Cadmium
- Chromium
- Heptachlor
- Mercury
- Lead
- Plutonium
- 1, 3, 4, 6 and 7 only
- 1, 2, 3, 5 and 6 only
- 2, 4, 5 and 7 only
- 1, 2, 3, 4, 5, 6 and 7
7) Which of the following can be found as pollutants in the drinking water in some parts of India?
- Arsenic
- Sorbitol
- Fluoride
- Formaldehyde
- Uranium
- 1 and 3 only
- 2, 4 and 5 only
- 1, 3 and 5 only
- 1, 2, 3, 4 and 5
8) Which one among the following industries is the maximum consumer of water in India?
- Engineering
- Paper and pulp
- Textiles
- Thermal power
9) Acid rain is caused by the pollution of environment by
- carbon dioxide and nitrogen
- carbon monoxide and carbon dioxide
- ozone and carbon dioxide
- nitrous oxide and sulphur dioxide
10) Photochemical smog is a resultant of the reaction among
- NO2, 03 and peroxyacetyl nitrate in the presence of sunlight
- CO, 02 and peroxyacetyl nitrate in the presence of sunlight
- CO, CO2 and N02 at low temperature
- High concentration of N02, O3 and CO in the evening
11) With reference to food chains in ecosystems, consider the following statements:
- A food chain illustrates the order in which a chain of organisms feed upon each other.
- Food chains are found within the populations of a species.
- A food chain illustrates the numbers of each organism which are eaten by others.
- 1 only
- 1 and 2 only
- 1, 2 and 3
- None
12) Which one of the following terms describes not only the physical space occupied by an organism, but also its functional role in the community of organisms?
- Ecotone
- Ecological niche
- Habitat
- Home range
13) With reference to the food chains in ecosystems, which of the following kinds of organism is / are known as decomposer organism/organisms?
- Virus
- Fungi
- Bacteria
- 1 only
- 2 and 3 only
- 1 and 3 only
- 1, 2 and 3
14) Consider the following fauna of India:
- Gharial
- Leatherback turtle
- Swamp deer
Which of the above is/are endangered?
- 1 and 2 only
- 3 only
- 1, 2 and 3
- None
- Star tortoise
- Monitor lizard
- Pygmy hog
- Spider monkey
Which of the above found in India?
- 1, 2 and 3 only
- 2 and 3 only
- 1 and 4 only
- 1, 2, 3 and 4
- Agaricus
- Nostoc
- Spirogyra
Which of the above is / are used as biofertilizer / biofertilizers
- 1 and 2
- 2 only
- 2 and 3
- 3 only
- Excretion of urea by animals
- Burning of coal by man
- Death of vegetation
Select the correct answer using the codes given below.
- 1 only
- 2 and 3 only
- 1 and 3 only
- 1, 2 and 3
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