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UPSC Ecology And Environment Environmental Issue And Environmental Pollution Question Bank Environmental Issues

  • question_answer
    Excessive exposure of humans to UV-rays results in
    1. damage to immune system
    2. damage to lungs
    3. skin cancer
    4. peptic ulcers
    Which of the above is/are correct?

    A) 1 and 2            

    B)  2 and 3

    C)  1 and 3           

    D)  2 and 4

    Correct Answer: C

    Solution :

    Prolonged human exposure to solar UV radiation may result in acute and chronic health effects on the skin, eye and immune system. Over the longer term, UV radiation induces degenerative changes in cells of the skin, fibrous tissue and blood vessels leading to premature skin aging, photodermatoses and actinic keratoses.


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