Ch. 21 Test A
Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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1.
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Fungi do NOT
a. | carry out photsynthesis | b. | grow on their food source | c. | digest food outside
their bodies | d. | absorb food through their cell walls |
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2.
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The tangled mass that makes up the body of a fungus is the
a. | hypha | c. | mycelium | b. | rhizoid | d. | stolon |
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3.
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Sporangia are found at the tops of specialized hyphae called
a. | sorangiophores | b. | mycelia | c. | gametangia | d. | stolons |
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4.
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Rhizopus reproduces
a. | by sexual reproduction only | b. | by asexual reproduction
only | c. | by both asexual and sexual reproduction | d. | all of the
above |
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5.
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In the life cycle of molds, when hyphae of different mating types meet, each
hypha forms a
a. | sporangium | c. | zygospore | b. | zoospore | d. | gametangium |
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6.
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The dry, powdered yeast used to bake bread actually contains
a. | zygospores | c. | conidia | b. | ascospores | d. | sporangia |
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7.
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In mushrooms, the basidia are found on the
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8.
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Over time, nutrients at the center of a large 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 |
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9.
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Penicillium reproduces asexually by means of conidia, similar to reproduction in
a(an)
a. | ascomycete | c. | basidiomycete | b. | zygomycete | d. | lichen |
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10.
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Fungi that absorb food from decaying organic matter are
a. | parasites | c. | mutualists | b. | saprobes | d. | autotrophs |
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11.
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Fungi feed on
a. | only living organisms | b. | only dead organisms | c. | both living and dead
organisms | d. | only other fungi |
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12.
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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 |
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13.
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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 |
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14.
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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. |
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15.
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The association of plants and fungi in mycorrhizae illustrates a type of
relationship called
a. | parasitism | c. | competition | b. | mutualism | d. | parallelism |
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Completion
Complete each
statement using the follolwing word bank.
chitin
club
enzymes
haploid wheat
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16.
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The cell walls of fungi are composed of the carbohydrate ______________.
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17.
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In the ___________________ stage of the ascomycete life cycle, shown in Figure
21-1, cells contain two nuclei.
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18.
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The basidiospores of ________________ fungi are scattered by the wind.
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19.
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Fungi break down complex organic matter by releasing digestive
_________________.
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20.
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A serious fungal disease of ___________________ needs two different plants to
complete its life cycle.
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