lichens form first community in
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algae and fungi together form as lichens and it I formed on rocks
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A lichen is not a lone creature.
Rather, it is a symbiosis between dissimilar organisms which may be a fungus and an alga or cyanobacterium.
Cyanobacteria are still referred to as blue green algae though they are fairly separate from the algae.
The non-fungal partner comprises chlorophyll and is called the photobiont.
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