AIPMT PRELIMS 2012 Zoology Pesticides MCQ Question with Solution

In an area where DDT had been used extensively, the population of birds declined significantly because

A

Many of the birds eggs laid, did not hatch

B

Birds stopped laying eggs

C

Earthworms in the area got eradicated

D

Cobras were feeding exclusively on birds

Correct Answer

Option A

Detailed Explanation

DDT is a pesticide that accumulates in the food chain, leading to thinning of eggshells in birds, causing them to break easily and reducing hatching success.

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