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Study the given aquatic food chain and a...

Study the given aquatic food chain and answer the questions that follow:

(i) Give reasons why there is a continuous increase in the DDT content in different trophic levels of the chain.
(ii) Name the phenomenon responsible for the increase in DDT content.

Text Solution

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(i) When DDT enters the food chain it reaches water. Since, it not degradable it gets accumulated progressively at each trophic level.
AB it reaches higher trophic levels, the concentration of DDT also increases.
(ii) Biological magnification.
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XII BOARD PREVIOUS YEAR PAPER ENGLISH-XII BOARDS-SECTION-B
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