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Lichen 2
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1. Lichen
A mutualist ic association of a fungus and photosynthetic organism, either a unicellular alga or a cyanobacterium . Some lichens are used to make natural fabric dyes.
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2. Lichens
Autotrophic organisms composed of a fungus (sac or club fungus) and a photosynthetic unicellular organism (e.g., a cyanobacterium or alga) in a symbiotic relationship; are resistant to extremes of cold and drought and can grow in marginal areas such as Arctic tundra.
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