what is lichens?
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Answers
Explanation:
lichen
/ˈlʌɪk(ə)n,ˈlɪtʃ(ə)n/
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noun
plural noun: lichens
1.
a simple slow-growing plant that typically forms a low crusty, leaflike, or branching growth on rocks, walls, and trees.
"the cedars are festooned with lichen"
2.
a skin disease in which small, hard round lesions occur close together.
"patients with oral lichen planus"
Answer:
"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."