Which of the following is used as an atmospheric pollution indicator?

Lepidoptera

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Lichens

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Lycopersicon

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Lycopodium

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Solution

The correct option is B Lichens
Lichens are used as an atmospheric pollution indicator. Lichens are plants that grow in exposed places such as rocks or tree bark. Rainwater having air pollutants especially sulfur dioxide, can damage lichens and prevent them from growing. This makes lichens natural indicators of air pollution.
So the correct option is 'Lichens'

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