NEET BIOLOGY

Detailed explanation-1: -Lichens have been used as a biological indicator for air pollution since 1866, when epiphytic lichens were used to assess the air pollution for the local area (Nylander, 1866).

Detailed explanation-2: -Lichens have been widely used as a biomonitoring tool to record the distribution and concentration of airborne radioactivity and pollutants such as metals.

Detailed explanation-3: -Because lichens enable algae to live all over the world in many different climates, they also provide a means to convert carbon dioxide in the atmosphere through photosynthesis into oxygen, which we all need to survive.

Detailed explanation-4: -Lichens are powerful biomonitor of airborne pollution around point sources or long range transport because they are perennial allowing bioindication at long period.