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AMU Medical AMU Solved Paper-1995

  • question_answer
    A natural phenomenon is commonly observed in lakes, ponds and ditches that there is a rich growth of algae and other micro-organisms which consume much of the dissolved oxygen, resulting the death of fish at night. The phenomenon is termed as

    A)  litterization       

    B)  transmigration

    C)  eutrophication    

    D)  estuarization.

    Correct Answer: C

    Solution :

    : Eutrophication is the pollution of water bodies resulting from slow, natural, geological, or biological processes such as encroachment of vegetation or accumulation of detritus. This is also called as natural eutrophication. The polluted water is rich in mineral nutrients and hence, there is rich growth of algae and other micro organisms which consume much of the dissolved oxygen, resulting the death of fish due to oxygen depletion.


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