Question

Select the incorrect statements from the following.

• A. Agaricus is an edible mushroom.
• B. Toadstool and Amanita are poisonous mushrooms.
• C. Puccinia and Ustilago are commonly used for antibiotic production.
• D. Lichens have no role in pollution.

Answer 1

The correct option is D Lichens have no role in pollution.

Lichens are used as the indicators of air pollution. These structures grow on tree bark and rocks. Air pollutants which are in the gaseous forms get dissolved in the rainwater, especially SO${}_2$ (sulphur dioxide) can damage lichens, and check them from growing. In places where lichens are not growing, it indicates that the air is heavily polluted with sulphur dioxide and other pollutants.

Thus, the correct answer is option D.