Questions
Lichens are considered as indicators of pollution because
a
they love of grow in SO2 polluted areas.
b
they do not grow in SO2 polluted areas.
c
they can tolerate air pollution.
d
they oxidize sulphur to sulphuric acid under aerobic conditions.
detailed solution
Correct option is B
Lichens are considered as best indicators of air pollution especially caused by vehicular discharges or industrial smokes. They are highly sensitive to sulphur dioxide pollution in air. Lichen thalli turning black is an indicator of high level of sulphur dioxide in atmosphere.Talk to our academic expert!
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