NEET Sample Paper NEET Sample Test Paper-15

  • question_answer The highest DDT deposition shall occur in

    A)  Phytoplankton      

    B)  Seagull/Birds

    C)  Crab                          

    D)  Eel

    Correct Answer: B

    Solution :

    DDT is not soluble in water but soluble in fats. Aquatic micro-organisms absorb them in fats where they accumulate to form concentration which is many times greater than in water. Zooplankton ac- cumulates more concentrations, fishes feeding on zooplanktons also accumulate more concentration and finally birds feeding on fishes contain these compounds in more concentration. This increases the accumulation of toxic substances in the food pyramids and is known as 'Biological Magnification?. Hence, the correct option is [b].

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