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Question
In an aquatic food chain, if the water body has 0.003 ppb of DDT, its maximum concentration can be observed in
In an aquatic food chain, if the water body has 0.003 ppb of DDT, its maximum concentration can be observed in
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Solution
The correct option is C fish-eating birds
If there is 0.003 parts per billion (ppb) of DDT in water then it enters the aquatic food chain through the primary consumers which are phytoplanktons. From the primary consumers, DDT enters the next trophic level which is occupied by the small fishes. Small fishes are consumed by the large fishes which form the next trophic level. Large fishes are consumed by the fish-eating birds. Due to biomagnification, concentration of DDT increases with an increase in the trophic level. So, the maximum concentration will be present in the highest trophic level, which in this case is occupied by the fish-eating birds.
If there is 0.003 parts per billion (ppb) of DDT in water then it enters the aquatic food chain through the primary consumers which are phytoplanktons. From the primary consumers, DDT enters the next trophic level which is occupied by the small fishes. Small fishes are consumed by the large fishes which form the next trophic level. Large fishes are consumed by the fish-eating birds. Due to biomagnification, concentration of DDT increases with an increase in the trophic level. So, the maximum concentration will be present in the highest trophic level, which in this case is occupied by the fish-eating birds.
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