With reference to lichens, which of the following statements is/are correct?
1. Lichens are very good indicators of pollution.
2. Lichens grow well in polluted areas. Select the correct answer from the code given below:
- AOnly 1
- BBoth 1 and 2
- CNeither 1 nor 2
- DOnly 2
Show answer and explanation
Correct answer: (a) Only 1
Explanation
Lichens (a symbiosis of alga + fungus) are highly sensitive to air pollutants like SO₂ and ozone, making them excellent bio-indicators of air quality (Statement 1 correct).
They do not grow in polluted areas; heavy pollution causes their decline or disappearance (Statement 2 incorrect).