CSAT 2021

Q. Approximately 80 percent of all flowering plant species are pollinated by animals, including birds and mammals, but the main pollinators are insects.

Pollination is responsible for providing us with a wide variety of food, as well as many plant-derived medicines. At least one-third of the world’s agricultural crops depend upon pollination. Bees are the most dominant taxa when it comes to pollination and they are crucial to more than four hundred crops. Pollination is an essential service that is the result of intricate relationship between plants and animals, and the reduction or less of either affects the survival of both. Effective pollination requires resources, such as refuges of pristine natural vegetation.

Q 1. On the basis of the passage given above, the following assumptions have been made:
1. Sustainable production of India’s cereal food grains is impossible without the diversity of pollinating animals.
2. Monoculture of horticultural crops hampers the survival of insects.
3. Pollinators become scarce in cultivated areas devoid of natural vegetation.
4. Diversity in insects induces diversity of plants.
Which of the above assumptions is/are valid?
(a) 1 only
(b) 2, 3 and 4 only
(c) 1 and 2 only
(d) 3 and 4 only

Question from UPSC Prelims 2021 CSAT Paper

Explanation : 

Q1: Correct Answer – (d) 3 and 4 only

Explanation – Based on the information given in the passage above, assumptions 3 and 4 are valid. The passage states that effective pollination requires resources such as refuges of pristine natural vegetation. This supports assumption 3 that pollinators become scarce in cultivated areas devoid of natural vegetation. The passage also mentions that pollination is an essential service that is the result of an intricate relationship between plants and animals and that the reduction or loss of either affects the survival of both. This supports assumption 4 that diversity in insects induces diversity in plants.

So, option (d) “3 and 4 only” is correct.

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