Environment & Biodiversity MCQs

Environment, Ecology & Biodiversity Multiple choice questions for GK paper in SSC, NDA, CDS, UPSC, UPPSC and State PSC Examinations. These questions are part of GKToday’s 35000+ MCQs Bank Course in GKToday Android App

21. The food chain in which the micro- organism feed by decomposing the organic matter is called-
[A] Detritus food chain
[B] Primary food chain
[C] Secondary food chain
[D] None of the above

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22. Which of the following is true about Greenhouse gases?

  1. Chloroflorus gases are greenhouse gases which also facilitates the brreakdown of ozone
  2. Fluorinated gases are not ozone depleting but have high greenhouse potential

Select the correct answer from the codes given below-

[A] 1 only
[B] 2 only
[C] Both
[D] None

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23. Which of the following is/are the characteristics of an ecotone?
1. Ecotone may be very narrow or quite wide.
2. It is a a zone of tension as it has the conditions intermediate to the adjacent ecosystems.
3. An ecotone which is well developed may contain some organisms which are entirely different from that of the adjoining communities.
Select the correct option from the codes given below:
[A] Only 1 & 2
[B] Only 2 & 3
[C] Only 1 & 3
[D] 1, 2 & 3

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24. Which of the following statements are correct regarding Temperate rain forests?
1) Fog may be very heavy and Rainfall is very high.
2) The biotic diversity is high as compared to other temperate forests.
3) The diversity of plants and animals is much low as compared to the tropical rainforest
Select the correct option from the codes given below:
[A] Only 1 & 2
[B] Only 2 & 3
[C] Only 1 & 3
[D] 1, 2 & 3

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25. Acacias and Euphorbias are very prominent in which of the following type of forests?
[A] Tropical Thorn forests
[B] Tropical Dry evergreen forest
[C] Sub tropical Broad-leaved forests
[D] Sub tropical Pine forests

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26. Which of the following statements are correct about the Sub alpine forest?
1) In the Eastern Himalayas, the vegetation consists mainly of juniper, rhododendron, willow, and black currant.
2) In the Western parts, red fir, black juniper, birch, and larch are the common trees.
Select the correct option from the codes given below:
[A] Only 1
[B] Only 2
[C] Both 1 & 2
[D] Neither 1 & 2

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27. Which of the following is not the importance of the Forests?
[A] Forests prevent floods
[B] Forests indirectly play a role in precipitation
[C] Forests provide macro climate
[D] Forests purify the air

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28. Which of the following activities does not results in the depletion of forests?
[A] Industrialization
[B] urbanization
[C] mining operations
[D] Privatisation

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29. Oak, pine, deodar, birch and rhododendron are the important trees of which of the following regions?
[A] Cold desert
[B] Hot desert
[C] Grasslands
[D] Tropical forests

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30. Which of the following statements are correct regarding Coral Reefs?
1) Coral is actually a living animal
2) Coral has a symbiotic relationship with ‘zooxanthellae
Select the correct option from the codes given below:
[A] Only 1
[B] Only 2
[C] Both 1 & 2
[D] Neither 1 & 2

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