lichen is a combination of an alga and a fungus. how do they help each other?
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Fungus is non green but it provides raw material to algae which is green and algae provides food to fungus.
Answered by
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Lichens are the symbiotic association between an algae and a fungus. The algae is generally a green
alga or blue green alga. The fungus is an ascomycete or
basidiomycete. It is believed that the alga contributes organic food from
photosynthesis and the fungus is able to absorb water and mineral salts. The
fungus can also conserve water and this enables some lichens to grow in extreme
dry conditions where no other plants can
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