SECTION
19.6
ECOLOGY OF FUNGI
Study Guide
KEY CONCEPT
Fungi recycle nutrients in the environment.
MAIN IDEA:
VOCABULARY
lichen
Fungi may be decomposers, pathogens, or mutualists.
1. How does the decomposing activity of fungi help ecosystems?
2. How are fungi well adapted as decomposers?
3. Fungi are the main decomposers of what two tough plant materials?
4. What negative effect to human industry may fungi decomposers have?
5. What are organisms that always cause disease called?
CHAPTER 19
Protists and Fungi
Copyright © McDougal Littell/Houghton Mifflin Company.
6. How does overuse or incorrect use of antibiotics contribute to infection by fungi?
7. What are two fairly mild infections to humans that are caused by fungi?
8. What are three diseases of plants that are caused by fungi?
9. What is usually the source of the chemicals used in antifungal medicines?
10. Use Figure 19.27 to sketch and label the structure of a lichen in the space provided.
Unit 6 Resource Book
McDougal Littell Biology
Study Guide
81
STUDY GUIDE, CONTINUED
11. What does an associated alga provide to a lichen?
12. What two roles do lichens play in an ecosystem?
13. Mycorrhizae are mutualistic associations between plant roots and fungi. What does the
fungi provide in this relationship?
14. How does the fungus benefit by being associated with plant roots as mycorrhizae?
15. What are two ways mycorrhizae are beneficial to a plant?
MAIN IDEA: Fungi are studied for many purposes.
Fill in the concept map below with details of how humans use fungi for different purposes.
16.
18.
17.
20.
antibiotics
molecular biology
model systems
19.
Vocabulary Check
21. A lichen is a mutualistic relationship between what two types of organisms?
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Study Guide
Unit 6 Resource Book
McDougal Littell Biology
Copyright © McDougal Littell/Houghton Mifflin Company.
CHAPTER 19
Protists and Fungi
Uses of fungi