Question

What are lichens explain its characteristics

Answer 1

Lichens are a small group of plants of composite nature, consisting of two dissimilar organisms, an alga and a fungus living in a symbiotic asso­ciation.


Characteristics:

• The fungus with its root gets the water and minerals and algae using its photosynthetic ability to produce food.
• They are sensitive to air pollution and are an indicator of air pollution.
• Thallophytic plant body with irregular shape and pigmentation.
• Pigmentation is due to the algae
• Alage belongs to the blue-green algae like Nostoc, Stigonema
• Fungus partner belongs to ascomycetes family.