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Question
Which one of the following is a bio-indicator of air pollution?
Which one of the following is a bio-indicator of air pollution?
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Solution
The correct option is C Lichen
Lichens can be used as bioindicators of air pollution. They obtain most of their essential nutrients from the air in the surrounding environment instead of the soil as a result of which they accumulate the pollutants present in the air on the fungal threads. Lichens are most helpful in detecting sulfur dioxide pollution but can also be used in detecting radioactive elements and other toxic compounds.
So, the correct answer is 'lichen'.
Lichens can be used as bioindicators of air pollution. They obtain most of their essential nutrients from the air in the surrounding environment instead of the soil as a result of which they accumulate the pollutants present in the air on the fungal threads. Lichens are most helpful in detecting sulfur dioxide pollution but can also be used in detecting radioactive elements and other toxic compounds.
So, the correct answer is 'lichen'.
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