What is the good pollution indicator ?

Question

Answer

Lichens.
Lichens are mutualistic associations of a fungus and an alga and occur as crusty or Continuous patches or bushy growths on trees, rocks and bare ground.

- Lichens are very sensitive to sulphur dioxide pollution in the air. Since industrialisation, many lichen species have become extinct in large areas
Lichens are injured by sulphur dioxide (SO2).Lichens have also shown sensitivity to some other pollutants, such as heavy metals and Other Gaseous Toxics in Air , but for the most part lichen damage can be attributed to SO2.

Answer

Lichens may be used as air pollution indicators, especially regarding the concentration of sulfur dioxide within the atmosphere. Lichens are plants that grow in exposed places such as rocks or tree bark. They have to be very good at absorbing water and nutrients to develop there....

Answer

Lichen is good pollution indicator because it doesn't grow polluted bodies

Answer

May be lichens

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Lichens are the most natural indicator of air pollution since they derive their nutrients from the atmosphere and not the soil in case there is ample growth of lichens on exposed areas like tree barks and rocks one can be sure that there is not much pollution in the air

Answer

Lichens are good pollution indicators because they do not grow in polluted areas

Answer

Lichens.
they detect the presence of SO2 in the atmosphere

Answer

Lichens  don't  grow in polluted  area.

Answer

Lichens

Answer

Lichen
It grows only in unpolluted area.

Answer

Lichen

Answer

Lichen

Answer

Lichens
reason.. they do not grow in polluted areas!

Answer

Lichen

Answer

Lichens do not grow in polluted areas

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Lichens serves as a indicator of so2 pollution ,,,,,,,n it is a pioneer species in xerosere succession

Answer

Lichens because yh bha per grow ni krte yha  highly polluted jga ho like industries etc

Answer

Lichens bcoz they don't grow in the polluted area.

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