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InterviewSolution
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DDT residues are rapidly passed through food chain causing biomagnification because DDT isA. lipid solubleB. moderately toxicC. non-toxic to aquatic animalsD. water soluble |
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Answer» Correct Answer - A Many of the pesticides, such as DDT, aldrin and dieldrin are accumulated in the environment. They are fat soluble and generally non-biodegradable. They get incorporated into the food chain and ultimately deposited in the fatty tissues of animals and humans. In the food chain, because of their build up, they get magnified in the higher trophic levels called biological magnification. The phenomenon of biological magnification is also reported for certain other pollutants such as, heavy metals, e.g., mercury, copper and radioactive substances as strontium-90. |
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