SSC Ecology And Environment Sample Paper NCERT Sample Paper-6

  • question_answer
    Non-ionising radiations damage the DNA, are

    A)  X-rays 

    B)  UV-rays

    C)  p-rays

    D)  y-rays

    Correct Answer: B

    Solution :

    [b] non-ionising radiations are mainly received from ultra-violet rays (UV-rays). They are massless but biologically harmful. As they damage-the DNA of cells. This harmful UV-rays is absorbed by o:sone layer in the stratosphere.

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