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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Which
of the following statements is NOT true? a. | Mammals are vertebrates. | b. | Invertebrates have no backbone. | c. | There are more vertebrate species than
invertebrates. | d. | The phylogenetic
tree of animals begins with the sponges. | e. | Arthropods have the most
species. | | |
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2.
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Which
of the following characteristics is NOT true of all animal phyla? a. | multicellular | b. | organ systems | c. | heterotrophic | d. | diploid | e. | sexual reproduction | | |
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3.
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Creeping behavior and a mouth located toward the head end of the body may have led, in
some evolutionary lines, to a. | development of a circulatory system with
blood. | b. | sexual
reproduction. | c. | feeding on
nutrients suspended in the water (filter feeding). | d. | concentration of sense organs in the head
region. | e. | radial
symmetry. | | |
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4.
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Poriferans are a. | herbivores. | b. | filter feeders. | c. | scavengers. | d. | predators. | e. | carnivores. | | |
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5.
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Unlike
most other animals, sponges lack a. | a digestive tract. | b. | a symmetrical body plan. | c. | nerve cells. | d. | a digestive tract and a symmetrical body
plan. | e. | a digestive
tract, a symmetrical body plan, and nerve cells. | | |
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6.
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Mesoglea is found in which of the following groups? a. | Porifera | b. | Cnidaria | c. | Nematoda | d. | Annelida | e. | Mollusca | | |
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7.
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Nematocysts are found only in a. | cnidarians. | b. | nematodes. | c. | crustaceans. | d. | echinoderms. | | |
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8.
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In the
life cycle of a typical cnidarian, which of the following would most likely be
free-swimming? a. | medusa | b. | polyp | c. | planula | d. | medusa and planula | | |
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9.
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The
first phylum on the evolutionary tree with three germ layers was a. | Cnidaria. | b. | Platyhelminthes. | c. | Annelida. | d. | Arthropoda. | e. | Nematoda. | | |
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10.
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A
scolex is a. | the anterior
attachment organ of a tapeworm. | b. | the feeding organ of a fluke. | c. | an appendage of a sandworm. | d. | the egg of a sea star. | e. | the larva of an aquatic insect. | | |
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11.
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The
tapeworm might be called the "ultimate" parasite because it a. | has no need of a host. | b. | can fertilize itself
indefinitely. | c. | is
immortal. | d. | has no digestive
tract. | e. | is
flat. | | |
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12.
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Which
of the following is a deuterostome? a. | bird | b. | squid | c. | fly | d. | earthworm | e. | centipede | | |
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13.
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Bivalves lack which of the following molluscan features? a. | foot | b. | head | c. | mantle | d. | shells | e. | visceral mass | | |
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14.
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The
mollusks with the most complex nervous systems are a. | chitons. | b. | cephalopods. | c. | gastropods. | d. | bivalves. | | |
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15.
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The
movement of earthworms is dependent on a. | circular muscles. | b. | longitudinal muscles. | c. | hydrostatic skeleton. | d. | setae. | e. | all of these | | |
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16.
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Which
of the following has a gut with two openings, a mouth and an anus? a. | Cnidaria | b. | Annelida | c. | Platyhelminthes | d. | Porifera | | |
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17.
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The
animal phylum that contains the greatest number of named species is a. | Mollusca. | b. | Arthropoda. | c. | Nematoda. | d. | Chordata. | e. | Annelida | | |
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18.
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Which
of the following is a disadvantage of an exoskeleton? a. | It must be shed for its owner to
grow. | b. | It does not
provide as efficient a muscle anchorage as an endoskeleton. | c. | It allows for excess water loss. | d. | It is not flexible enough to allow a full range of
movement. | e. | It is not able to
absorb pigments for sufficient camouflage. | | |
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19.
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An
unidentified arthropod with no antennae and eight pairs of legs. could be closely related
to a. | grasshoppers. | b. | ticks. | c. | crayfish. | d. | millipedes. | e. | trilobites. | | |
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20.
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Which
phylum is strictly marine, with no freshwater or terrestrial forms? a. | Echinodermata | b. | Platyhelminthes | c. | Cnidaria | d. | Mollusca | e. | Annelida | | |
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Matching
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Answer
the following questions in reference to the five animal phyla listed below: a. | Porifera | b. | Cnidaria | c. | Platyhelminthes | d. | Nematoda | e. | Annelida | | |
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21.
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Members of this phylum have a pseudocoelomic cavity.
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22.
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Members of this group have a brain with nerve cords, a saclike or branched gut, and
lack a circulatory system.
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23.
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Members of this phylum have a brain with a ventral nerve cord, a complete gut, and a
circulatory system that is usually closed.
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24.
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This
phylum contains the most primitive specis of the animal kingdom.
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25.
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Tapeworms are members of this phylum.
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