DDT was sprayed in a lake to regulate breeding of mosquitoes. How would it affect the trophic levels in the following food chain associated with a lake? Justify your answer

CBSE Sample Question Paper, Class 10 Science Term 2 Question 1 - (DDT was sprayed in a lake to regulate breeding of mosquitoes. How would it affect the trophic levels in the following food chain associated with a lake? Justify your answer)

By
Komal Kohli
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7 DDT was sprayed in a lake to regulate breeding of mosquitoes. How would it affect the trophic levels in the following food chain associated with a lake? Justify your answer.

Ans : ● DDT being a non- biodegradable pesticide will enter the food chain from the first trophic level i.e Plankton.
● Non – biodegradable pesticides accumulate progressively at each trophic level. This phenomenon is known as biological magnification.
● HAWK will have the highest level of pesticide.

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