Question

Definition lichens from cambridge dictionary

Answer 1

A simple slow-growing plant that typically forms a low crusty, leaflike, or branching growth on rocks, walls, and trees. ... 'In contrast to higher plants, lichens and mosses are capable of tolerating full dehydration.

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Answer 2

Hey friend

Here is your answer

lichen  a type of organism that consists of an alga (= plant without leaves or roots) and a fungus (= plant without leaves, flowers, or color) growing together. 

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