Lichens are considered good indicators of air pollution because they:
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Correct answer: Are highly sensitive to sulphur dioxide
Lichens are extremely sensitive to sulphur dioxide pollution. Their absence in an area often indicates poor air quality.
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More Lichens and Their Significance questions
- Which type of lichen has a flat, leaf-like thallus?
- Crustose lichens are characterized by:
- Fruticose lichens differ from foliose lichens in having:
- Which of the following correctly describes the relationship in lichens?
- The algal partner in most lichens commonly belongs to:
- Which ecological role is commonly played by lichens?