UPSC Environment & Ecology

21. With reference to bamboo charcoal, which of the following uses are correct?

  1. Barbeque
  2. Soil Nutrition
  3. Raw material for manufacturing activated charcoal

Select the correct answer using the codes given below:

[A] Only 1 & 2
[B] Only 2 & 3
[C] Only 1 & 3
[D] 1, 2 & 3

Show Answer

22. Consider the following pairs regarding India's first thematic parks and their respective states:

  1. 1st Seaweed Park – Tamil Nadu
  2. 1st Gender Park – Kerala
  3. 1st Pollinator Park – Himachal Pradesh
  4. 1st Fire Park – Odisha

Which of the pairs given above are matched correctly?

[A] Only 1, 2 and 3
[B] Only 2, 3 and 4
[C] Only 1, 2 and 4
[D] 1, 2, 3 and 4

Show Answer

23. Consider the following statements regarding the latest Lancet Commission on Pollution and Health:

  1. In 2000, India lost output equivalent to 3.2 per cent of its GDP as a result of pollution.
  2. Air pollution corresponds to one in six deaths worldwide.
  3. Water pollution is the second largest cause for worldwide deaths.

Which of the statements given above are correct?

[A] 1, 2 and 3
[B] Only 1 and 2
[C] Only 1 and 3
[D] Only 2 and 3

Show Answer

24. Consider the following pairs concerning Indian wildlife sanctuaries and their characteristic fauna:

  1. National Chambal Sanctuary – Gharial
  2. Ghatigaon Wildlife Sanctuary – Indian Bustard
  3. Pilikula Biological Park – King Cobra
  4. Coringa Wildlife Sanctuary – White-backed vulture

How many pairs given above are matched correctly?

[A] Only 1 pair
[B] Only 4 pairs
[C] Only 2 pairs
[D] Only 3 pairs

Show Answer

25. Consider the following statements:

  1. They are found in areas with rainfall ranging between 70 -100 cm
  2. On the wetter margins, it has a transition to the moist deciduous,
  3. On the drier margins, it has a transition to the thorn forests.

Which of the above statements is/are correct about characteristics of Dry deciduous forests?

[A] Only 1 and 2
[B] Only 1 and 3
[C] Only 2 and 3
[D] All of the above

Show Answer

26. Consider the following statements:

  1. Arable land in the irrigated zones of India is becoming saline because of overirrigation.
  2. Chemical fertilisers in the absence of organic manures are harmful to the soil.
  3. Unless the soil gets enough humus, chemicals harden it and reduce its fertility in the long run.

Which of the above conditions prevail in areas that were first beneficiaries of the Green Revolution?

[A] Only 1 and 2
[B] Only 2 and 3
[C] Only 1 and 3
[D] All of the above

Show Answer

27. Consider the following statements:

  1. All colour components of the visible spectrum are available for marine plants at different depths of the ocean.
  2. The sediment-characteristics often determine the type of benthic animals that can thrive.

Which of the above statements is / are correct?

[A] Only 1
[B] Only 2
[C] None of the above
[D] Both 1 and 2

Show Answer

28. Consider the following statements:

  1. Natality refers to the number of deaths in the population during a given period.
  2. Immigration refers to the number of births during a given period that are added to the initial density.

Which of the above is / are correct?

[A] Only 1
[B] Only 2
[C] Both 1 and 2
[D] None of the above

Show Answer

29. Consider the following statements:

  1. In terrestrial ecosystems, grazing food chain is the major conduit for energy flow.
  2. Based on their feeding habits, organisms belong to different trophic levels.

Which of the above statements is/are correct?

[A] Only 1
[B] Both 1 and 2
[C] None of the above
[D] Only 2

Show Answer

30. Consider the following statements:

  1. Hydrarch succession takes place in wet areas.
  2. Both hydrarch and xerarch successions lead to medium water conditions.

Which of the above is / are correct?

[A] Only 1
[B] Only 2
[C] Both 1 and 2
[D] None of the above

Show Answer