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Question

As DDT passes into food chain, the concentration:

A
Remains same
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B
Decreases
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C
Increases
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D
Unpredictable
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Solution

The correct option is A Increases

  • DDT (Dichlorodiphenyltrichloroethane) is an organochlorinated compound that is stable in nature. The level of DDT increases as the food chain progresses.
  • It means, the primary consumers will have more DDT concentration than the producers, the secondary consumers will have more than primary consumers and so on.
  • The highest concentrations will be seen in the top carnivore. As the consumers at each successive trophic level consume more food to fulfil their energy requirements.
  • Therefore, DDT accumulates in higher concentrations in successive trophic levels. This process is called biomagnification.
Hence, the correct answer is 'Increases'.

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