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Question
The highest DDT concentration in aquatic food chain shall occur in
The highest DDT concentration in aquatic food chain shall occur in
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Solution
The correct option is D Seagull
DDT is a pesticide that can leach into water and enter into food chains. Tiny plankton in the sea absorbs DDT. When the plankton are eaten by small fish, the DDT they contain stays in the fish. As the fish need to eat a lot of plankton, the concentration of DDT in them becomes higher than its concentration in the plankton.The small fish are eaten by larger fish(Eel or crab), and these are eaten by still larger predators such as a bird or bigger fish. This creates a high concentration of DDT in the bird(seagull) and the bigger fish.
DDT is a pesticide that can leach into water and enter into food chains. Tiny plankton in the sea absorbs DDT. When the plankton are eaten by small fish, the DDT they contain stays in the fish. As the fish need to eat a lot of plankton, the concentration of DDT in them becomes higher than its concentration in the plankton.The small fish are eaten by larger fish(Eel or crab), and these are eaten by still larger predators such as a bird or bigger fish. This creates a high concentration of DDT in the bird(seagull) and the bigger fish.
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