Which are sensitive to `SO_(2)` pollution?

SO_(2) pollution causes

Lichens are organisms, which are very sensitive to air pollution. The graph shows how the distance from a coal-fired power station affects the number of different types of growing lichen. What conclusion can be drawn from this information?

Organisms which are indicator of SO_(2) pollution of air

Name the receptors which are sensitive to touch.

Lichens are sensitive to certain air pollutants and are often replaced by other plants. From the given options choose the best combination of sensitivity and replacement of lichens.

Eicchornia (water hyacinth) is sensitive to which kind of pollution ?

Lichens are sensitive to which component of air pollution.

Which of the following are most suitable indicators of SO_(2) pollution in the environment ?