To test the given hypothesis. Concept introduction: Lichen refers to symbiotic association formed between a fungus and an alga or a cyanobacterium. Its growth is seen in various forms on the surfaces of rotting logs, trees, rocks, and roofs. Given: Two hypotheses are proposed for lichen growth forms: a) Hypothesis 1: “Crustose, foliose, and fruticose lichens, of which each represent a monophyletic group” b) Hypothesis 2:“Each lichen growth form represents convergent evolution by taxonomically diverse fungi”

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Chapter 31, Problem 6TYU

Summary Introduction

To write: To test the given hypothesis.

Concept introduction: Lichen refers to symbiotic association formed between a fungus and an alga or a cyanobacterium. Its growth is seen in various forms on the surfaces of rotting logs, trees, rocks, and roofs.

Given: Two hypotheses are proposed for lichen growth forms:

a) Hypothesis 1: “Crustose, foliose, and fruticose lichens, of which each represent a monophyletic group”

b) Hypothesis 2:“Each lichen growth form represents convergent evolution by taxonomically diverse fungi”

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