Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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1.
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What are animals that have a backbone called?
a. | invertebrates | c. | vertebrates | b. | heterotrophs | d. | eukaryotes |
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2.
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Which of the following are trends in animal evolution as animals become more
complex?
a. | having a body cavity | c. | high levels of cell specialization | b. | bilateral body
symmetry | d. | all of the
above |
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3.
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When an animal zygote undergoes a series of divisions to form a hollow ball of
cells, it is called a(an)
a. | blastula. | c. | ectoderm. | b. | spicule. | d. | anus. |
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4.
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What is an animal called whose mouth is formed from the blastopore?
a. | protostome | c. | mesoderm | b. | deuterstome | d. | archaeocyte |
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5.
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An animal that has distinct left and right sides shows
a. | radial symmetry. | c. | several planes of symmetry. | b. | segmentation. | d. | bilateral symmetry. |
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6.
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Unlike plants, sponges are
a. | heterotrophic. | c. | unicellular. | b. | autotrophic. | d. | photosynthetic. |
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7.
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What are the specialized cells that use flagella to move a steady current of
water through a sponge?
a. | spicules | c. | archaeocytes | b. | choanocytes | d. | cnidocytes |
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8.
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Sponges reproduce sexually through a process called
a. | cephalization. | c. | radial symmetry. | b. | internal fertilization. | d. | budding. |
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9.
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Some sponges are green because they
a. | are more like plants than animals. | b. | filter algae out of the water for
food. | c. | have photosynthetic organisms in their tissues. | d. | are primary
producers. |
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10.
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Which of the following is a characteristic of cnidarians?
a. | bilateral symmetry | c. | radial symmetry | b. | cephalization | d. | internal
fertilization |
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11.
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Cnidarians have two basic body types, a medusa and a(an)
a. | larva. | c. | polyp. | b. | tentacle. | d. | osculum. |
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12.
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The nerve cells of cnidarians make up a(an)
a. | brain. | c. | hydrostatic skeleton. | b. | ocellus. | d. | nerve net. |
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13.
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What is a digestive chamber with one opening called?
a. | gastrovascular cavity | c. | blastula | b. | central cavity | d. | hydrostatic
skeleton |
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14.
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The class Scyphozoa contains
a. | jellyfishes. | c. | corals. | b. | hydras. | d. | sea anemones. |
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15.
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Coral reefs occur in areas where there are
a. | high levels of sediment. | c. | high levels of
light. | b. | very deep waters. | d. | very cool waters. |
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Completion
Complete each
statement using the word bank.
cnidocytes, deuterostomes,
invertebrates, feedback, larva,
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16.
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Animals that do not have backbones are called ____________________.
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17.
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The body mechanism in which the product or result of a process stops or limits
the process is called ____________________ inhibition.
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18.
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All vertebrates are ____________________, which are animals whose anus is formed
from the blastopore.
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19.
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An immature stage of an organism that looks different from the adult form is
a(an) ____________________.
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20.
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The stinging cells of cnidarians are called ____________________.
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