Environment & Ecology PYQs

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1. Prelims 2014Q78International Conventions & Organisations

   Consider the following international agreements :

   1.The International Treaty on Plant Genetic Resources for Food and Agriculture

   2.The United Nations Convention to Combat Desertification

   3.The World Heritage Convention

   Which of the above has/have a bearing on the biodiversity?

   a1 and 2 onlyb3 onlyc1 and 3 onlyd1, 2 and 3
2. Prelims 2014Q79Climate Change

   Consider the following statements regarding ‘Earth Hour’ :

   1.It is an initiative of UNEP and UNESCO.

   2.It is a movement in which the participants switch off the lights for one hour on a certain day every year.

   3.It is a movement to raise the awareness about the climate change and the need to save the planet.

   Which of the statements given above is/are correct?

   a1 and 3 onlyb2 onlyc2 and 3 onlyd1, 2 and 3
3. Prelims 2014Q80Ecology & Ecosystems

   Which one of the following is the correct sequence of a food chain?

   aDiatoms–Crustaceans–HerringsbCrustaceans–Diatoms–HerringscDiatoms–Herrings–CrustaceansdCrustaceans–Herrings–Diatoms
4. Prelims 2014Q95Protected Areas & Conservation

   With reference to 'Eco-Sensitive Zones', which of the following statements is/are correct?

   1.Eco-Sensitive Zones are the areas that are declared under the Wildlife (Protection) Act, 1972.

   2.The purpose of the declaration of Eco-Sensitive Zones is to prohibit all kinds of human activities in those zones except agriculture.

   Select the correct answer using the code given below.

   a1 onlyb2 onlycBoth 1 and 2dNeither 1 nor 2
5. Prelims 2014Q96Indian Environmental Laws & Bodies

   Consider the following statements :

   1.Animal Welfare Board of India is established under the Environment (Protection) Act, 1986.

   2.National Tiger Conservation Authority is a statutory body.

   3.National Ganga River Basin Authority is chaired by the Prime Minister.

   Which of the statements given above is/are correct?

   a1 onlyb2 and 3 onlyc2 onlyd1, 2 and 3
6. Prelims 2014Q98Environmental Pollution

   There is some concern regarding the nanoparticles of some chemical elements that are used by the industry in the manufacture of various products. Why?

   1.They can accumulate in the environment, and contaminate water and soil.

   2.They can enter the food chains.

   3.They can trigger the production of free radicals.

   Select the correct answer using the code given below.

   a1 and 2 onlyb3 onlyc1 and 3 onlyd1, 2 and 3
7. Prelims 2013Q7Biodiversity & Species

   Consider the following:

   1.Star tortoise

   2.Monitor lizard

   3.Pygmy hog

   4.Spider monkey

   Which of the above are naturally found in India?

   a1, 2 and 3 onlyb2 and 3 onlyc1 and 4 onlyd1, 2, 3 and 4
8. Prelims 2013Q8Environmental Pollution

   Which of the following can be found as pollutants in the drinking water in some parts of India?

   1.Arsenic

   2.Sorbitol

   3.Fluoride

   4.Formaldehyde

   5.Uranium

   Select the correct answer using the codes given below.

   a1 and 3 onlyb2, 4 and 5 onlyc1, 3 and 5 onlyd1, 2, 3, 4 and 5
9. Prelims 2013Q17Protected Areas & Conservation

   Consider the following pairs:

   1.Nokrek Biosphere Reserve : Garo Hills

   2.Loktak Lake : Barail Range

   3.Namdapha National Park : Dafla Hills

   Which of the above pairs is/are correctly matched?

   a1 onlyb2 and 3 onlyc1, 2 and 3dNone
10. Prelims 2013Q22Ecology & Ecosystems

    In the grasslands, trees do not replace the grasses as a part of an ecological succession because of

    ainsects and fungiblimited sunlight and paucity of nutrientscwater limits and firedNone of the above
11. Prelims 2013Q23Ecology & Ecosystems

    Which one of the following is the correct sequence of ecosystems in the order of decreasing productivity?

    aOceans, lakes, grasslands, mangrovesbMangroves, oceans, grasslands, lakescMangroves, grasslands, lakes, oceansdOceans, mangroves, lakes, grasslands
12. Prelims 2013Q29Environmental Pollution

    Due to improper/indiscriminate disposal of old and used computers or their parts, which of the following are released into the environment as e-waste?

    1.Beryllium

    2.Cadmium

    3.Chromium

    4.Heptachlor

    5.Mercury

    6.Lead

    7.Plutonium

    Select the correct answer using the codes given below:

    a1, 3, 4, 6 and 7 onlyb1, 2, 3, 5 and 6 onlyc2, 4, 5 and 7 onlyd1, 2, 3, 4, 5, 6 and 7
13. Prelims 2013Q30Environmental Pollution

    Acid rain is caused by the pollution of environment by

    acarbon dioxide and nitrogenbcarbon monoxide and carbon dioxidecozone and carbon dioxidednitrous oxide and sulphur dioxide
14. Prelims 2013Q31Ecology & Ecosystems

    With reference to food chains in ecosystems, consider the following statements:

    1.A food chain illustrates the order in which a chain of organisms feed upon each other.

    2.Food chains are found within the populations of a species.

    3.A food chain illustrates the numbers of each organism which are eaten by others.

    Which of the statements given above is/are correct?

    a1 onlyb1 and 2 onlyc1, 2 and 3dNone
15. Prelims 2013Q32Protected Areas & Conservation

    Consider the following pairs:

    National Park : River flowing through the Park

    1.Corbett National Park : Ganga

    2.Kaziranga National Park : Manas

    3.Silent Valley National Park : Kaveri

    Which of the above pairs is/are correctly matched?

    a1 and 2b3 onlyc1 and 3dNone
16. Prelims 2013Q33Sustainable Agriculture & Development

    Consider the following organisms:

    1.Agaricus

    2.Nostoc

    3.Spirogyra

    Which of the above is/are used as biofertilizer/biofertilizers?

    a1 and 2b2 onlyc2 and 3d3 only
17. Prelims 2013Q34Ecology & EcosystemsAnswer disputed

    Which of the following adds/add nitrogen to the soil?

    1.Excretion of urea by animals

    2.Burning of coal by man

    3.Death of vegetation

    Select the correct answer using the codes given below.

    a1 onlyb2 and 3 onlyc1 and 3 onlyd1, 2 and 3
18. Prelims 2013Q35Biodiversity & Species

    In which of the following States is lion-tailed macaque found in its natural habitat?

    1.Tamil Nadu

    2.Kerala

    3.Karnataka

    4.Andhra Pradesh

    Select the correct answer using the codes given below.

    a1, 2 and 3 onlyb2 onlyc1, 3 and 4 onlyd1, 2, 3 and 4
19. Prelims 2013Q48Ecology & Ecosystems

    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?

    aEcotonebEcological nichecHabitatdHome range
20. Prelims 2013Q49Environmental Pollution

    Photochemical smog is a resultant of the reaction among

    aNO₂, O₃ and peroxyacetyl nitrate in the presence of sunlightbCO, O₂ and peroxyacetyl nitrate in the presence of sunlightcCO, CO₂ and NO₂ at low temperaturedhigh concentration of NO₂, O₃ and CO in the evening