Which among the following is likely to have the highest levels of D.D.T. depositions in its body?
Correct answer: A. Sea gull
- A. Sea gull
- B. Phytoplankton
- C. Eel
- D. Crab
Explanation
DDT is non-biodegradable and is not metabolized within the body of an organism rather it accumulates in the fat tissues therefore its concentration goes on increasing from one trophic level to another of a food chain, highest amount being present in top consumer i.e., it shows biomagnification. In an aquatic food chain seagull is the top carnivore therefore will possess highest concentration of DDT.
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Ecosystems include biotic and abiotic components, food chains and webs, energy flow, nutrient cycles, populations and ecological relationships. Pollution and conservation cover air, water, soil and noise pollution, their effects on organisms, biodiversity loss, protected areas, sustainable resource use and methods for reducing environmental damage.
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