SSC Ecology And Environment Sample Paper NCERT Sample Paper-6

  • question_answer
    An epiphytic lichen is a good indicator of a number of pollutants of them the most famous is

    A)  \[S{{O}_{2}}\]            

    B)  \[C{{O}_{2}}\]

    C)  \[CO\]             

    D)  \[N{{O}_{2}}\]

    Correct Answer: A

    Solution :

    [a] An epiphyte is a plant that grows harmlessly upon another plant (such as a tree) and derives its moisture and nutrients from the air, rain, and sometimes from debris accumulating around it. Air pollution levels thus can estimated by the distribution of lichen species with different sensitivities.

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