Q. Consider the following statements:
1.In bioaccumulation there is an increase in concentration of a pollutant from the environment to the first organism in a food chain.
2.In biomagnification there is an increase in concentration of a pollutant from one link in a food chain to another.
Which of the statements given above is/are correct?

[A] 1 only

[B] 2 only

[C] Both 1 and 2

[D] Neither 1 nor 2

Answer: C
Notes:

Explanation: Movement of these pollutants involves two main processes:

  1. Bioaccumulation
  2. Biomagnification

Bioaccumulation:

  • It refers to how pollutants enter a food chain.
  • In bioaccumulation there is an increase in concentration of a pollutant from the environment to the first organism in a food chain.

Biomagnification:

  • Biomagnification refers to the tendency of pollutants to concentrate as they move from one trophic level to the next.
  • Thus, in biomagnification there is an increase in concentration of a pollutant from one link in a food chain to another.

Source: SHANKAR IAS Environment