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Natural Resources — Science STD 9 — Question

Gujarat BoardEnglish MediumSTD 9ScienceNatural Resources1 Mark
MCQ
Which are sensitive to $SO_2$ pollution?
  • A
    Mosses.
  • ✓
    Lichens.
  • C
    Algae.
  • D
    Ferns.
✓

Answer

Correct option: B.
Lichens.
Sulphur dioxide is a gas that dissolves in water and produces acidic ions that are highly reactive. When lichen absorb this gas, it disrupts photosynthesis, inhibits reproduction and other activities.

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