Lichen is a symbiotic association existing between a photosynthetic partner and a fungus , usually a cyanobacterium. The properties exhibited by lichens always create confusion while differentiating it as a plant or fungus, but lichens are definitely not plants. They are found in all extreme environments extending from deep sea to high alpine elevations.

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Chapter 23, Problem 10SQ

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Introduction: Lichen is a symbiotic association existing between a photosynthetic partner and a fungus, usually a cyanobacterium. The properties exhibited by lichens always create confusion while differentiating it as a plant or fungus, but lichens are definitely not plants. They are found in all extreme environments extending from deep sea to high alpine elevations.

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