Question

Which of the following is an indicator of SO2 (Sulfur dioxide) pollution in the air?

A Algae Correct Answer Incorrect Answer
B Fungi Correct Answer Incorrect Answer
C Mosses Correct Answer Incorrect Answer
D Lichens Correct Answer Incorrect Answer

Solution

These phycobionts in lichens are susceptible to Sulfur dioxide  . Lichens are the finest bio-indicators for air pollution, especially sulphur dioxide contamination, because they primarily obtain their vital nutrients and water from the atmosphere rather than the soil. 

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