Question

what is lichen give two example​

Answer 1

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➡️✒Question:

What is lichen? Give two examples.

➡️✒Answer:

lichen, or lichenized fungus, is actually two organisms functioning as a single, stable unit. Lichens comprise a fungus living in a symbiotic relationship with an alga or cyanobacterium (or both in some instances). There are about 17,000 species of lichen worldwide.

Example:

1. Parmelia 2. Usnea.

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Answer 2

Answer:

in the Arctic tundra , lichens , together with Mosses and leaveworts , make up maturity on the ground cover which help insulator the ground and may provide forage for gRazing animal. example-reindeer moss, which is a lichens , not a mosses. a crustose lichen that that grow rocks is called saxicolous lichen.