Due to some reasons, if there is a huge fall in the population of species of butterflies, what could be its likely consequence/consequences?

  1. Pollination of some plants could be adversely affected.
  2. There could be a drastic increase in the fungal infections of some cultivated plants.
  3. It could lead to a fall in the population of some species of wasps, spiders and birds.

Select the correct answer using the code given below:

[UPSC Civil Services Exam – 2017 Prelims]

(a) 1 only

(b) 2 and 3 only

(c) 1 and 3 only

(d) 1, 2 and 3


Answer: (c)        

Explanation:

  • Butterflies, as well as bees, have a crucial role in pollinating plants and aiding crop production. By transferring pollen grains, butterflies facilitate plant reproduction.
  • If butterfly populations decline significantly, pollination of certain plants could suffer negative effects. Therefore, Statement 1 is correct.
  • Currently, there is no scientific evidence to support the notion that a dramatic increase in fungal infections among cultivated plants has occurred. Therefore, Statement 2 is incorrect.
  • A decline in butterfly populations could have an impact on the populations of other species, such as wasps, spiders, and birds, as these creatures rely on butterflies as a primary food source. Therefore, Statement 3 is correct.

Consider the following statements:                                                                   The Parliament of India can place a particular law in the Ninth Schedule of the Constitution of India. The validity of a law placed in the Ninth Schedule cannot be examined by any court and no judgement can be made on it. Which of the statements given above is/are correct?

Consider the following statements:                                               

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Consider the following statements:                                                         The Parliament of India can place a particular law in the Ninth Schedule of the Constitution of India. The validity of a law placed in the Ninth Schedule cannot be examined by any court and no judgement can be made on it. Which of the statements given above is/are correct?

Consider the following statements:                                               

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