Name: 
 

Quiz:  Chapter 21


Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.
 

1. 
All fungi
a.
make their food.
b.
absorb their food.
c.
produce mushrooms.
d.
have chlorophyll.
 

2. 
Fungi do NOT
a.
undergo photosynthesis.
b.
grow on their food source.
c.
digest food outside their bodies.
d.
absorb food through their cell walls.
 

3. 
Fungi resemble plants in that they both always
a.
have stems.
b.
grow from the ground.
c.
are multicellular.
d.
have cell walls.
 

4. 
A mushroom is a fungal
a.
fruiting body.
b.
lichen.
c.
mycorrhiza.
d.
yeast.
 

5. 
The tangled mass that makes up the body of a fungus is the
a.
hypha.
b.
rhizoid.
c.
mycelium.
d.
stolon.
 
 
quiz_21_files/i0070000.jpg

Figure 21-1
 

6. 
Fungal hyphae, shown in Figure 21-1, differ in that some lack
a.
cell walls.
b.
cross walls.
c.
nuclei.
d.
cytoplasm.
 

7. 
Most fungi reproduce
a.
asexually only.
b.
sexually only.
c.
both sexually and asexually.
d.
by budding.
 

8. 
Dark fuzz that grows on bread is an example of
a.
toadstool.
b.
spore.
c.
yeast.
d.
mold.
 

9. 
Bread rises because fermentation by yeast produces
a.
spores.
b.
rhizoids.
c.
water.
d.
carbon dioxide.
 

10. 
Yeasts obtain energy by alcoholic fermentation in the absence of
a.
moisture.
b.
carbon dioxide.
c.
oxygen.
d.
sugar.
 

11. 
Mushrooms are classified as
a.
common molds.
b.
sac fungi.
c.
club fungi.
d.
imperfect fungi.
 

12. 
In mushrooms, the basidia are found in the
a.
base.
b.
stalk.
c.
cap.
d.
root.
 

13. 
Over time, nutrients at the center of a large underground mycelium become depleted, causing new mushrooms to sprout only
a.
in a cluster at the center.
b.
in a ring at the outer edges.
c.
when the nutrients are replaced.
d.
after budding takes place.
 

14. 
Which statement about Penicillium is correct?
a.
It produces mushrooms.
b.
It causes bread to rise.
c.
It is the source of an antibiotic.
d.
It causes athlete's foot.
 

15. 
An important role of fungi in an ecosystem is
a.
photosynthesis.
b.
breaking down dead organisms.
c.
making alcohol.
d.
killing bacteria.
 

16. 
Fungi that absorb food from decaying organic matter are
a.
parasites.
b.
saprophytes.
c.
mutualists.
d.
autotrophs.
 

17. 
Fungi feed on
a.
only living organisms.
b.
only dead organisms.
c.
both living and dead organisms.
d.
only other fungi.
 

18. 
The breakdown of dead organisms is sped on by the fungal production of
a.
alcohols.
b.
acids.
c.
digestive enzymes.
d.
recycled nutrients.
 

19. 
The human disease ringworm is caused by
a.
worms.
b.
bacteria.
c.
a fungus.
d.
yeasts.
 

20. 
Crop damage by fungal diseases is
a.
greatest in tropical areas.
b.
least in tropical areas.
c.
greatest in temperate areas.
d.
not affected by climate.
 

21. 
The fungus that forms a mycelium within the outer layers of human skin causes
a.
ringworm and athlete's foot.
b.
thrush and reproductive-tract infections.
c.
reproductive-tract infections and ringworm.
d.
athlete's foot and thrush.
 
 
quiz_21_files/i0240000.jpg

Figure 21-2
 

22. 
Figure 21-2 illustrates an association of a(an)
a.
cyanobacterium and a plant.
b.
alga or cyanobacterium and a fungus.
c.
plant and a fungus.
d.
alga and a plant.
 

23. 
Which of the following is NOT a single organism?
a.
rust
b.
smut
c.
yeast
d.
lichen
 

24. 
Which statement about lichens is correct?
a.
They are not tolerant of harsh conditions.
b.
They cannot make their own food.
c.
They grow only in soil.
d.
They are composed of an alga or a cyanobacterium and a fungus living together.
 

25. 
The association of plants and fungi in mycorrhizae illustrates a type of relationship called
a.
parasitism.
b.
mutualism.
c.
competition.
d.
parallelism.
 



 
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