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Reviewing Key Concepts

Short Answer On the lines provided, answer the following questions.

1. What role do fungi play as decomposers in ecosystems?

2. Give an example of a plant disease caused by a parasitic fungus. How doesthe fungus affect the plant?

3. Give an example of a human disease caused by fungal parasites. How doesthe fungus affect a person?

4. Why are lichens considered to be a symbiotic association between two organisms?

5. What are mycorrhizae and why is the association important to many ecosystems?

Reviewing Key Skills

Interpreting Graphics On the lines provided, label the structures that make up alichen as one of the following: Densely packed hyphae, Layer of algae orcyanobacteria, and Loosely packed hyphae. A structure can be used more than once.

Chapter 21 Fungi Section Review 21-3

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