Q.

Lichen is an association between which of the two?

A. Algae and fungus
B. Algae and tree
C. Fungus and tree
D. Bacteria and legume plant
Answer» A. Algae and fungus
Explanation: A lichen is an organism that is formed by the symbiotic association of a fungus and an algae or cyanobacterium. It occurs as crusty patches or bushy growths on tree trunks, bare ground, etc. The properties are sometimes plant-like, but lichens are not plants.
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