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________ are pollution indicator plants
- a)Mycorrhiza
- b)Lichen
- c)Rose
- d)Marigold
Correct answer is option 'B'. Can you explain this answer?
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________ are pollution indicator plantsa)Mycorrhizab)Lichenc)Rosed)Mar...
Lichens are best indicator of pollution because lichens are very sensitive to sulphur dioxide pollution in the air. If air is very badly polluted with sulphur dioxide there may be no lichens present, just green algae may be found. If the air is clean, shrubby, hairy and leafy lichens become abundant. A few lichen species can tolerate quite high levels of pollution and are commonly found on pavements, walls and tree bark in urban areas. Lichens have also shown sensitivity to some other pollutants, such as heavy metals and other toxic gases in air.
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________ are pollution indicator plantsa)Mycorrhizab)Lichenc)Rosed)Mar...
Lichens are well known as sensitive indicators of air pollution, particularly for sulfur dioxide. ... At the least, lichens appear to be less sensitive to oxidants than vascular plants. Acid precipitation effects are closely related to SO2 effects.
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________ are pollution indicator plantsa)Mycorrhizab)Lichenc)Rosed)MarigoldCorrect answer is option 'B'. Can you explain this answer?
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