SSC Ecology And Environment Sample Paper NCERT Sample Paper-4

  • question_answer
    Which one of the following statements best reflect the overall position of current science on the role of biodiversity in ecosystems?

    A)  The more species in an ecosystem, the greater the biomass production.

    B)  The more species in an ecosystem, the greater the drought resistance.

    C)  The effects of biodiversity on the functioning of an ecosystem are not consistent.

    D)  Almost every species in an ecosystem is essential to maintain the overall ecosystem.

    Correct Answer: C

    Solution :

    [c] The relationship between biodiversity and ecosystem functions quantified in prior experiments suggests that initial losses of biodiversity have relatively small impacts on properties like community biomass production; however, beyond some threshold, increasing losses lead to accelerating declines in function.

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