AMU Medical AMU Solved Paper-1996

  • question_answer
    If the decomposers stop functioning in an ecosystem, from functioning of ecosystem will be affected due to

    A)  energy flow in the ecosystem will be blocked

    B)  cycling of mineral and material will be stopped

    C)  both [a] and [b]

    D)  nothing will happen on the functioning of ecosystem.

    Correct Answer: C

    Solution :

    : Decomposers are saprophytically growing heterotrophs capable of reducing the complex organic matters of dead organic remains into simple inorganic forms. After the death of organisms of different trophic levels, the mineral elements contained in their utilized biomass are released to the physical environment through the activities of decomposers for recycling, from where these can be reduced by plants. In such cycling of mineral nutrients, both biotic components and physical environments are equally involved through series of chemical reactions and transformations (bio-geo-chemical cycle).


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