Question

What are the groups of plants that live as symbionts in lichens? Name the study of lichens.

Answer 1

All the algae and cyanobacteria are believed to be able to survive separately, as well as within the lichen; that is, at present no algae or cyanobacteria are known which can only survive naturally as part of a lichen. Common algal partners are Trebouxia, Pseudotrebouxia, or Myrmecia.

and the study is called  botany

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Answer 2

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⭐. The plants that live as symbionts in lichens are algae and fungi .

⭐. The study of lichenis called lichenology.