A lichen is a composite organism that arises from algae or cyanobacteria living among filaments of multiple fungi in a mutualistic relationship.

- Image ID: 2B5G6K7

A lichen is a composite organism that arises from algae or cyanobacteria living among filaments of multiple fungi in a mutualistic relationship.

Süleyman ALKAN / Alamy Stock Photo

Image ID: 2B5G6K7

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