As insecticides reach at higher trophic level in food chain, their concentration

Increases

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Become irregular

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Remain constant

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Decreases

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Solution

The correct option is A Increases
The use of persistent chemicals has an effect on the food chain. Chemicals that do not break down are passed from one organism to the next and organisms at higher trophic levels tend to accumulate larger amounts than the organisms they feed on. This situation is known as biomagnification.

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Similar questions

Q. Which among the following is the correct sequence of food chain from a lower trophic level to a higher trophic level?

Q. Percentage energy transferred to higher trophic level in food chain is

Q. The accumulation of non-biodegradable substances in a food chain in increasing amount at each higher trophic level is known as _____________.

Assertion : In a food chain members of successive higher levels are fewer in number.

Reason : Number of organisms at any trophic level depends upon the availability of organisms which serve as food at the lower level.

Question 13
Which of the following limits the number of trophic levels in a food chain?

(a) Decrease in energy at higher trophic levels
(b) Sufficient food supply
(c) Polluted air
(d) Water

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