BotanyWhich of the following are most suitable indicators of SO2 pollution in the environment?

Which of the following are most suitable indicators of SO2 pollution in the environment?

  1. A

    Algae

  2. B

    Fungi

  3. C

    Lichens

  4. D

    Conifers

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    Solution:

    Lichens are most suitable indicators of  SO2 pollution in the environment.

    Lichens are considered as best indicators of air pollution especially caused by vehicular discharges or industrial smokes. They are highly sensitive to sulphur dioxide pollution in air. Lichen thalli turning black is an indicator of high level of sulphur dioxide in atmosphere.

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