Question

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

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

विकल्प

• Both A and R are true and R is the correct explanation of A.

• Both A and R are true but R is not the correct explanation of A.

• A is true but R is false.

• A is false but R is true.

Answer 1

Both A and R are true and R is the correct explanation of A.

Explanation:

Harmful non-biodegradable chemicals, such as pesticides, can accumulate in organisms and their concentration increases at each successive level of a food chain. This process is called biomagnification. Therefore, the Assertion (A) is true.

Humans often occupy the apex or highest trophic level of the food chain. Therefore, they may receive the maximum concentration of such harmful chemicals through the organisms they consume. Therefore, Reason (R) is also true.

Hence, both A and R are true, and R is the correct explanation of A.