B.P.S.C. TRE-3, July 2024
Lichens are sensitive to which air pollutant ?
aMethane
bCarbon monoxide
cSulfur dioxide✓ Correct
dMore than one of the above
eNone of the above
Explanation
Lichens are sensitive to air pollution. In particular, they are highly sensitive to sulfur dioxide. Lichens act as indicators of air pollution.
environment-ecology