Download Chapter 22 – Fungi – Study Guide Due

Name_____________________________
Per____
Chapter 22 – Fungi – Study Guide
Review from Ch. 19
Due: ____________
Kingdom Fungi
multicellular except for unicellular yeast
cell walls of chitin (found also in exoskeleton of arthropods)
composed of long slender strands of cells that share cytoplasm called hyphae (form “body” of fungus)
reproduce asexually and sexually, means of reproduction is how fungi are classified
remember myco = fungi; mycete also = fungi
heterotrophs –secrete digestive enzymes on a substrate and absorb the nutrients; many are
saprophytes (live on dead or decaying organisms) or parasites (live on living organisms)
- no chlorophyll (not green)
Complete the chart below using p. 421
Kinds of Fungi
Phylum
Reproductive Characteristics
Examples & Diagrams
Zygomycetes
-
Basidiomycetes
Ascomycetes
Answer the following questions using chapter 22, beginning with p. 482.
1. Fungi are heterotrophic. Evidence of this involves what fungi do NOT have as well as what
processes are evident in their metabolism. What do fungi NOT have?
2. Describe the body of a fungus and the relationship between hyphae and mycelium. P. 483 .
3. What polysaccharide found elsewhere only in the arthropods is also found in the cell walls of
fungi? ___________________ How is this different from plant cell walls? _______________
4. Fungi can be ________________, living on dead and decaying organisms, or they can be
____________________, living on or in another organism, possibly causing disease.
5. Fungi can cause disease and destroy food. What can fungi do that is valuable?
6. What are spores? ___________________________ What natural resource do fungi depend on
to spread their spores? ___________ p. 484
7.
How do yeast reproduce (p. 487)? ____________ Is this asexual or sexual? _____________
Fungal Partnerships
What is a symbiotic relationship?
What is mutualism?
Briefly explain two examples of mutualism involving fungi.
Section: Fungal Partnerships
Fungi Assessment Quiz
Holt Biology © Holt, Rinehart and Winston
In the space provided, write the letter of the description that best matches the term or phrase. Some choices
may be used more than once.
_____ 1. include a photosynthetic partner
_____ 2. a symbiotic relationship between two
living things
_____ 3. found underground
_____ 4. one partner is a fungus
_____ 5. one partner is a plant (often a tree)
_____ 6. neither partner benefits
_____ 7. includes an alga
A.
B.
C.
D.
mycorrhizae
lichens
both mycorrhizae and lichens
neither mycorrhizae and lichens
In the space provided, write the letter of the term or phrase that best completes each statement or best
answers each question.
_____ 8. Plants can grow successfully in infertile soils if the plants have which of the following?
A. truffles
B. mushrooms
C. lichens
D. mycorrhizae
_____ 9. In mycorrhizae, the hyphae penetrate the outer cells of a plant’s
A. leaves
B. roots
C. stems
D. fruits
_____ 10. The algae in lichens provide the ability to use which of the following to make carbohydrates?
A. water
B. air
C. chitin
D. sunlight
Analyzing the Effect of Mycorrhizae
Background
Two groups of plants were planted in similar soils under similar conditions, but group A was grown in sterilized
soil and group B was grown in nonsterilized soil. After 18 weeks of growth, a photograph was taken of the
plants. Examine the drawing and answer the following questions.
Group A
Group B
Analysis
1. Compare the growth of the two groups. Which grew larger & faster?
2. Explain why one group grew better than the other group?
3. Critical Thinking – Inferring Relationships – Suggest a possible cause of slower growth in the small
plants.
4. Recommend a course of action to restore growth in the stunted plants.