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Which one of the organisms is likely to have the maximum concentration of harmful chemical DDT in the aquatic food chain consisting of Kingfisher, Zooplankton, fish, and Phytoplankton?
1. Zooplankton
2. Phytoplankton
3. Kingfisher
4. Fish

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Correct Answer - Option 3 : Kingfisher

The correct answer is Kingfisher.

 

  • The organism which occurs at the highest trophic level in the food chain will have the maximum concentration of harmful chemicals in its body.
  • Since Kingfisher occurs at the highest trophic level, therefore, it will have the maximum concentration of harmful chemicals in its body. 
  • Here the food chain will be:
    • Phytoplankton→Zooplankton→Fish→Kingfisher

  • Foodchain:
    • ​The sequence of living organisms in a community in which one organism consumes another organism to transfer food energy is called a food chain.
    • In simple words, a list of organisms showing 'who eats whom' is called the food chain.
    • The food can be transferred from one organism to the other through the food chain.
    • All food chains begin with green plants which are the source of all food.
    • It represents a unidirectional transfer of energy.
    • Each step in the food chain is called a trophic level.
    • A food chain starts with producers and ends with top carnivores.

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