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Ch. 21 Test B

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

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

 2. 
A mushroom is a fungal
a.
fruiting body.
c.
mycorrhiza.
b.
lichen.
d.
yeast.
 

 3. 
Most fungi reproduce
a.
asexually only.
c.
both sexually and asexually.
b.
sexually only.
d.
by budding.
 

 4. 
Stinkhorns, which mimic the odor of rotting meat, have spores that are dispersed by
a.
wind.
c.
snow.
b.
birds.
d.
flies.
 

 5. 
Dark fuzz that grows on bread is an example of
a.
a toadstool.
c.
yeast.
b.
a spore.
d.
mold.
 

 6. 
Bread rises because fermentation by yeast produces
a.
spores.
c.
water.
b.
rhizoids.
d.
carbon dioxide.
 

 7. 
Mushrooms are classified as
a.
common molds.
c.
club fungi.
b.
sac fungi.
d.
imperfect fungi.
 

 8. 
Which structure is NOT found in a mushroom?
a.
ascus
c.
cap
b.
gills
d.
stalk
 

 9. 
Which statement about Penicillium is correct?
a.
It produces mushrooms.
c.
It is the source of an antibiotic.
b.
It causes bread to rise.
d.
It causes athlete’s foot.
 

 10. 
An important role of fungi in an ecosystem is
a.
photosynthesis.
c.
making alcohol.
b.
breaking down dead organisms.
d.
killing bacteria.
 

 11. 
Fungi might have been important to the evolution of
a.
worms.
c.
bacteria.
b.
grasshoppers.
d.
plants.
 

 12. 
The human disease ringworm is caused by
a.
worms.
c.
a fungus.
b.
bacteria.
d.
yeasts.
 

 13. 
The growth of yeasts in moist regions of the body is kept in check by competition from
a.
antibiotics.
c.
rusts.
b.
bacteria.
d.
mildews.
 

 14. 
The normal balance between bacteria and yeasts in the body can be upset by
a.
eating yeast-leavened bread.
c.
using antibiotics.
b.
eating edible mushrooms.
d.
being exposed to mushroom spores.
 

 15. 
Which of the following is NOT a single organism?
a.
rust
c.
yeast
b.
smut
d.
lichen
 

Completion
Complete each statement using the following word bank.
asexual          caps           lichen          mycorrhizae          sexual
 

 16. 
____________________ reproduction takes place when cells or hyphae break off a fungus and begin to grow.
 

 

 17. 
Spore-bearing structures called basidia are found in the ____________________ of mushrooms.
 

 

 18. 
Imperfect fungi do not have a known ____________________ phase in their life cycles.
 

 

 19. 
The symbiotic associations of plant roots and fungi are called ____________________.
 

 

 20. 
The cyanobacterium or algal layer of the ____________________ shown in Figure 21-4 performs photosynthesis.

co020-1.jpg

Figure 21–4
 

 



 
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