Multiple choice

Which of the following organisms are well known as the indicator of SO2 pollution of air?

  1. Mosses

  2. Lichens

  3. Jelly fungi

  4. Cyphelloid fungi

  5. Earthballs

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Lichens are the indicator of pollution. By studying the behaviour of lichens the type of pollution can be detected. They are the most sensitive and die in SO2 rich area.