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Give scientific reasons : Lichens play...

Give scientific reasons :
Lichens play important role in biological succession and soil formation. 

Text Solution

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Lichens growing on rock secrete organic acid like oxalic acid. This acid enter the rock and produce a number of crevices. Dust and organic matter collect in the crevices. Mass spores are able to grow over such crevices and start the process of succession and soil formation.
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