Tell me About lichens?? please
Answers
Answer:
A lichen is not a single organism but a symbiosis among different organisms like fungus and a cyanobacterium or algae. Cyanobacteria are also referred to as blue-green algae despite the fact of being distinct from algae. The non-fungal part is known as photobiont that contains chlorophyll. Many lichen partners include one photobiont and one mycobiont which is not universal and there are lichens with more than one photobiont partner. The fungal partner is viewed to be composed of filamentous cells and every filament is known as hypha. These hyphae may branch but maintain a constant distance and grow by extension. There are a few lichens with filamentous structure among the photobionts while others consist of chains of more or fewer cells.
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Answer:
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.
Lichens exist in one of the below-mentioned growth forms.
example :- liverworts.
1(Crustose grow across the substrate.
2)Foliose are flat, leaf-like sheets of tissues and not bound closely.
3)Squamulose are closely clustered and lit flattened pebble units.
4)Fruticose are freely available in standing branching tubes.
5)Gelatinous or jelly-like appearance
6(Leprose are lichens with powdery appearance.