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Question
DDT residues are rapidly passed through the food chain causing biomagnification because DDT is
DDT residues are rapidly passed through the food chain causing biomagnification because DDT is
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Solution
The correct option is A Lipid soluble
Many of the pesticides, such as DDT, aldrin and dieldrin are accumulated in the environment. They are fat soluble and generally non-biodegradable. Since DDT is not soluble in water, it is not washed away by rains, adding to its persistence in the environment. But since DDT is lipid-soluble, it tends to concentrate in the body fat of animals. They get incorporated in the food chain and their concentrations increase manifold at higher trophic levels by the phenomenon called biomagnification. The phenomenon of biomagnification has also been reported for other pollutants such as heavy metals, e.g., mercury, copper, radioactive substances etc.
Many of the pesticides, such as DDT, aldrin and dieldrin are accumulated in the environment. They are fat soluble and generally non-biodegradable. Since DDT is not soluble in water, it is not washed away by rains, adding to its persistence in the environment. But since DDT is lipid-soluble, it tends to concentrate in the body fat of animals. They get incorporated in the food chain and their concentrations increase manifold at higher trophic levels by the phenomenon called biomagnification. The phenomenon of biomagnification has also been reported for other pollutants such as heavy metals, e.g., mercury, copper, radioactive substances etc.
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