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With reference to the given food web that exists in a lake ecosystem polluted with PCB (Poly chlorinated biphenyls), the greatest concentration of this pollutant will be found in
With reference to the given food web that exists in a lake ecosystem polluted with PCB (Poly chlorinated biphenyls), the greatest concentration of this pollutant will be found in
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Solution
The correct option is A Herring gull
Polychlorinated biphenyls or PCB's are a group of man-made compounds. These, when released into lakes and ponds, attach to sediments where they can remain buried for a long time before being eventually released into water and air. These pollutants build up in animals and birds over time along the food web. These accumulate in the fatty tissues of animals living in water and on land. In most cases, the bio-accumulation is maximum on the organisms on the top of the food chain. In the given diagram of the food web of the lake ecosystem, the greatest concentration of the pollutant will be found on the birds as they form the top of the food chain.
Polychlorinated biphenyls or PCB's are a group of man-made compounds. These, when released into lakes and ponds, attach to sediments where they can remain buried for a long time before being eventually released into water and air. These pollutants build up in animals and birds over time along the food web. These accumulate in the fatty tissues of animals living in water and on land. In most cases, the bio-accumulation is maximum on the organisms on the top of the food chain. In the given diagram of the food web of the lake ecosystem, the greatest concentration of the pollutant will be found on the birds as they form the top of the food chain.
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