Question

The term 'Biomagnification' is used to denote a

• A. a rapid of plants growth due to excessive intake of nutrients.
• B. an increase in the population size of the aquatic life.
• C. a decrease in the population size of the aquatic life.
• D. an increase in the concentration of non-degradable pollutants as they pass through the food chain.

Answer 1

Answer: (D)

Some pollutants cannot be degraded or metabolized completely in nature by any method and become accumulated in nature. So these pollutants are continuously increased in organisms of aquatic food chain in successive trophic level, It is called Biomagnification. A common example is DDT. Maximum concentration of DDT is seen in fish eating birds which affect their calcium metabolism.