Question

Lichens act as indicators for sulphur dioxide pollutant

• A. True
• B. False

Answer 1

The correct option is A True

Lichens:

1. Sulfur dioxide has an impact on plants both directly and indirectly.
2. Lichens are most sensitive to sulfur dioxide, but they are also sensitive to other acidic pollutant gases as well as heavy metals and photo oxidants.
3. Lichens are widely used as biomarkers.
4. Lichens are absent in areas with high sulphur dioxide concentrations.

Final answer: The given statement is true.