Question

what are lichens? Explain​

Answer 1

Explanation:

Lichens are a complex life form that is a symbiotic partnership of two separate organisms, a fungus and an alga. The alga can be either a green alga or a blue-green alga, otherwise known as cyanobacteria. Many lichens will have both types of algae.

Answer 2

Answer:

A lichen, or lichenized fungus, is actually two organisms functioning as a single, stable unit. Lichens comprise a fungus living in a symbiotic relationship with an alga or cyanobacterium