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Assertion (A): The concentration of harmful chemicals is more in human beings.

Reason (R): Man is at the apex of the food chain.



Harmful chemicals accumulate progressively through each trophic level in the food chain. Since man is at the apex of every food chain, the concentration of harmful chemicals is most in humans. 


  • Assertion is true.
  • Reason is true.
  • Reason is the correct explanation of assertion.

So, the correct answer is (a).

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Maninder Singh

CA Maninder Singh is a Chartered Accountant for the past 13 years and a teacher from the past 17 years. He teaches Science, Economics, Accounting and English at Teachoo