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Question
Lichens do not occur in areas with
Lichens do not occur in areas with
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Solution
The correct option is B Pollution
Lichens represent the symbiotic association between the algae and the fungi. These absorb their mineral nutrition from the moisture-laden air rather than the soil. So, the contamination of the air severely impairs their growth and they disappear from the areas that have a heavy concentration of sulphur pollutants in the air. Due to this sensitivity, these are considered to be the bioindicators of air pollution.Hence, the correct answer is 'Pollution'.
Lichens represent the symbiotic association between the algae and the fungi. These absorb their mineral nutrition from the moisture-laden air rather than the soil. So, the contamination of the air severely impairs their growth and they disappear from the areas that have a heavy concentration of sulphur pollutants in the air. Due to this sensitivity, these are considered to be the bioindicators of air pollution.
Hence, the correct answer is 'Pollution'.
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