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Question
Which one of the following organisms is likely to show the highest concentration of DDT, once it has been introduced into the ecosystem?
Which one of the following organisms is likely to show the highest concentration of DDT, once it has been introduced into the ecosystem?
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Solution
The correct option is C Snake
Biomagnification is process of transfer of toxic substance such as DDT and Mercury, in increasing concentration in successive trophic level of food chain.
Pollutant increases in concentration from Producers → Primary consumers → Secondary consumers →Tertiary consumers → Top consumer. In the given question, only snake represents the tertiary consumer, so the concentration of DDT will be highest in snake. Grasshopper, toads and cattles are usually primary and secondary consumers. Therefore, the correct answer is option C.
Biomagnification is process of transfer of toxic substance such as DDT and Mercury, in increasing concentration in successive trophic level of food chain.
Pollutant increases in concentration from Producers → Primary consumers → Secondary consumers →Tertiary consumers → Top consumer.
In the given question, only snake represents the tertiary consumer, so the concentration of DDT will be highest in snake. Grasshopper, toads and cattles are usually primary and secondary consumers.
Therefore, the correct answer is option C.
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