Multiple Choice
Identify the letter of the choice that
best completes the statement or answers the question.
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1.
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A
protist is any organism that is not a plant, an animal, a fungus, or a. | a eukaryote. | b. | a prokaryote. | c. | heterotrophic. | d. | photosynthetic. | | |
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2.
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Multicellular protists are grouped with unicellular protists because
they a. | do not resemble
plants. | b. | do not resemble
animals. | c. | do not resemble
fungi. | d. | are very similar
to unicellular protists. | | |
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3.
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Eukaryotic cells may have evolved from a. | a symbiosis of several cells. | b. | mitochondria that grew very
large. | c. | chloroplasts that
grew very large. | d. | plants, animals, and fungi. | | |
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4.
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In an
amoeba, a small cavity within the cytoplasm that stores food is a a. | gullet. | b. | pseudopod. | c. | food vacuole. | d. | contractile vacuole. | | |
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5.
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Members of the phylum that contains amoebas, foraminifers, and heliozoans
are a. | sarcodines. | b. | ciliates. | c. | sporozoans. | d. | pseudopods. | | |
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6.
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Zooflagellates may live in lakes and streams, where they a. | penetrate and live with cells of a
host. | b. | absorb food
through their cell membrane. | c. | feed by sweeping food particles into their
gullet. | d. | feed by
surrounding their meal and taking it inside themselves. | | |
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7.
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Some
animallike protists are important to the balance in ecosystems because they a. | live in insects without harming
them. | b. | contaminate water
supplies. | c. | break down dead
organic matter. | d. | are difficult to kill when they produce
cysts. | | |
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8.
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Which
statement about malaria is true? a. | Not all strains can be treated, and there is no completely
effective vaccine. | b. | All strains can be treated with modern drugs, however
there is no completely effective vaccine. | c. | All strains can be treated with modern drugs, and there is
an effective vaccine. | d. | Malaria has been eradicated by control of the
Anopheles mosquito. | | |
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9.
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Termites could not damage wooden structures without the cooperation of the animallike
protist a. | Giardia. | b. | Entamoeba. | c. | Trichonympha. | d. | Trympanosoma. | | |
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10.
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A
person who comes down with malaria can infer that he or she contracted it from a. | contaminated water supplies. | b. | infection by the animallike protist
Giardia. | c. | the bite of the Anopheles
mosquito. | d. | the bite of the
tsetse fly. | | |
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11.
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Algae
have a range of colors because they a. | make different kinds of light
energy. | b. | have different
accessory pigments. | c. | have only chlorophyll a. | d. | change color in seawater. | | |
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12.
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The
evolution of different chlorophylls and accessory pigments in algae had what effect? a. | a decrease in the range of depths at which algae can
live | b. | an increase in
the range of depths at which algae can live | c. | no effect on the range of depths at which algae can
live | d. | a reduction in
the photosynthetic capacity of algae | | |
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13.
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Which
of the statements is true about dinoflagellates? a. | They contain bright yellow
pigments. | b. | They can be both
photosynthetic and heterotrophic. | c. | Many species are luminescent. | d. | They possess pillbox-shaped cell walls of
silica. | | |
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14.
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A
bloom is a. | the clouding of
water by sewage. | b. | an enormous mass of algae. | c. | a symbiotic relationship between algae and
coral. | d. | none of the
above | | |
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15.
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The
population of small, photosynthetic organisms found near the surface of the ocean are referred to as
the a. | chrysophytes. | b. | pyrophytes. | c. | phytoplankton. | d. | diatoms. | | |
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16.
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Which
organism would most likely be present in a water sample collected during a red tide? a. | Tridacna | b. | Euglenophyta | c. | Gonyaulax | d. | diatoms | | |
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17.
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What
characteristic of green plants is shared by green algae? a. | cell wall composition | b. | photosynthetic pigments | c. | multicellularity | d. | all of the above | | |
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18.
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The
phylum of multicellular algae most likely to be observed at great depths is a. | Chlorophyta. | b. | Rhodophyta. | c. | Phaeophyta. | d. | none of the above | | |
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19.
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An
argument that does NOT support the classification of multicellular green algae as plants is that
multicellular green algae a. | have specialized tissues. | b. | live primarily in water. | c. | display alternation of
generations. | d. | contain
chlorophyll a, which makes them green. | | |
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20.
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What
very large type of algae lives off the coasts of North America and provides a home for many
animals? a. | rockweed | b. | sea lettuce | c. | brown kelp | d. | Irish moss | | |
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21.
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Some
products derived from algae include a. | drugs for stomach ulcers and high blood
pressure. | b. | thickeners for
food. | c. | chemicals in
plastics, waxes, paints, and lubricants. | d. | all of the above | | |
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22.
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Which
of the following is algae’s most important contribution to humans? a. | as a source for industrial
chemicals | b. | as a source for
medicinal drugs | c. | as a photosynthesizer | d. | as a direct food source for
humans | | |
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23.
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Funguslike protists get nutrients by a. | photosynthesis. | b. | living as an animal parasite. | c. | absorbing them from dead or decaying
matter. | d. | none of the
above | | |
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24.
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Which
type of protist is likely to be easily found in a damp, nutrient-rich environment? a. | a single-celled alga | b. | a animallike protist | c. | a funguslike protist | d. | all of the above | | |
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25.
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The
funguslike protists that thrive on dead or decaying organic matter in water are a. | water molds. | b. | acellular slime molds. | c. | cellular slime molds. | d. | true fungi. | | |
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