11
Question
SO2 pollution is indicated by
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Solution
The correct option is C
Usnea (lichens)
Lichens represent
the symbiotic association between the species of Algae and Fungi.
These forms absorb much of their mineral nutrients from the air
rather than the soil. So, any contamination would threaten their
existence. If air is polluted with sulphur dioxide, then lichens will
die in that particular environment. Since the era of
industrialization, many species of lichens have gone extinct. Due to
this property, lichens are considered to be the indicators of the air
pollution. Hence, the correct
answer is Usnea (Lichen)'
Usnea (lichens)
Lichens represent the symbiotic association between the species of Algae and Fungi. These forms absorb much of their mineral nutrients from the air rather than the soil. So, any contamination would threaten their existence. If air is polluted with sulphur dioxide, then lichens will die in that particular environment. Since the era of industrialization, many species of lichens have gone extinct. Due to this property, lichens are considered to be the indicators of the air pollution. Hence, the correct answer is Usnea (Lichen)'
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