SSC Ecology And Environment Sample Paper NCERT Sample Paper-3

  • question_answer
    Consider the following statements about ecosystem stability:
    1. It increases with increase of number of links in the food web.
    2. It increases with the increase in length of food chain. Which of the statements given above is/are correct?

    A)  1 only 

    B)  2 only

    C)  Both 1 and 2    

    D)  neither 1 nor 2

    Correct Answer: A

    Solution :

    [a] A diverse ecosystem is more stable. More number of links in food web signifies a diverse ecosystem and hence a more stable one. Each organism then have a variety of food sources However, longer food chains are not good. A short food chain plus a large number of links in food web signify a stable ecosystem

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