Question

Why do not lichens occur in Delhi whereas they commonly grow in Manali or Darjeeling?

  • Natural resources CBSE Class 9
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Answer

Lichen is a bio-indicator and sensitive to SO2 pollution from automobiles. Delhi has maximum automobile pollution, hence has a highly polluted environment. Due to the polluted environment, lichen do not survive in Delhi whereas they are present in the pollution-free environment of Darjeeling or Manali.

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