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 is a characteristic shared by all animals? a. | Their bodies
have many cells. | b. | They eat plants. | c. | They reproduce
asexually. | d. | They have skeletons. | | |
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2.
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An
animal that has a backbone is called a(n) a. | cnidarian. | b. | predator. | c. | vertebrate. | d. | invertebrate. | | |
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3.
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Which
of the following is NOT a characteristic that biologists use to classify animals? a. | the
animal’s body structure | b. | the animal’s DNA | c. | where the animal
lives | d. | how the animal develops | | |
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4.
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Which
of these animals has radial symmetry? a. | a sea anemone | b. | a
butterfly | c. | a rabbit | d. | a
fish | | |
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5.
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An
animal has bilateral symmetry if a. | no lines can be drawn to divide the animal into halves that are
mirror images. | b. | many lines can be drawn to divide the animal into halves that
are mirror images. | c. | one line can be drawn to divide the animal into halves that are
mirror images. | d. | any line through the center of the animal divides it into
halves that are mirror images. | | |
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6.
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How
does a sponge obtain its food? a. | Jelly-like cells trap the food. | b. | Spikes kill the
food. | c. | Collar cells filter the food from
water. | d. | Pores absorb the food. | | |
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7.
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Which
of these is a function of spikes in a sponge? a. | protect the sponge’s body | b. | to help the
sponge reproduce | c. | to digest and distribute food | d. | to obtain
oxygen | | |
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8.
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What
does a cnidarian use to capture prey? a. | pores | b. | stinging
cells | c. | collar cells | d. | mouth | | |
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9.
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Which
of these is vase-shaped? a. | a medusa | b. | a
polyp | c. | a sponge larva | d. | an adult
jellyfish | | |
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10.
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What
makes up a coral reef? a. | the skeletons of dead corals | b. | the skeletons of
living corals | c. | the skeletons of both dead corals and living
corals | d. | from the jelly produced by living
corals | | |
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11.
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Which
of the following best describes the kinds of animals found in a coral reef? a. | only
invertebrates | b. | invertebrates and vertebrates | c. | only
corals | d. | only vertebrates | | |
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12.
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Which
of these is NOT a major kind of worm? a. | a flatworm | b. | a
roundworm | c. | a silkworm | d. | a segmented
worm | | |
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13.
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Which
of the following is NOT a flatworm? a. | a tapeworm | b. | an
earthworm | c. | a fluke | d. | a
planarian | | |
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14.
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Which
of the following describes a roundworm’s digestive system? a. | Food enters the
body and wastes leave the body through the same opening. | b. | Food enters
through a feeding tube. | c. | Food travels through the digestive system in two
directions. | d. | The digestive system is like a tube that is open at both
ends. | | |
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15.
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A
segmented worm’s circulatory system a. | moves blood in a network of blood
vessels. | b. | sloshes blood around freely inside the
worm. | c. | has blood vessels only in a few
segments. | d. | is shaped like a tube with two
openings | | |
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16.
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The
process by which a new organism forms from the joining of an egg cell and a sperm cell is
called a. | asexual
reproduction. | b. | sexual reproduction. | c. | adaptation. | d. | budding. | | |
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17.
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At
the beginning of its life, a coral polyp a. | has the medusa body plan. | b. | attaches to a
solid surface. | c. | burrows into the mud on the ocean
floor. | d. | feeds only on sponges. | | |
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18.
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Which
of the following is a characteristic of animals with radial symmetry? a. | They have no
distinct head or tail ends. | b. | They must move quickly to catch prey. | c. | They move faster
on land than in water. | d. | They have sense organs at the front of their
bodies. | | |
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19.
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Which
of these is a phylum of worms? a. | Porifera | b. | Annelida | c. | Cnidaria | d. | Invertebrate | | |
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20.
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How
do sponges reproduce sexually? a. | Sperm from one sponge fertilize eggs in the same
sponge. | b. | Water carries sperm from one sponge to eggs in another
sponge. | c. | Water carries eggs from one sponge to sperm in another
sponge. | d. | One sponge buds and forms a new
sponge. | | |
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21.
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Which
of these characteristics is shared by all worms? a. | They have separate sexes. | b. | They are
parasites. | c. | They live in soil. | d. | They have a
brain. | | |
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22.
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Organisms that grow on or in other organisms are called a. | parasites. | b. | hosts. | c. | prey. | d. | scavengers. | | |
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23.
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The
bodies of cnidarians have a. | no symmetry. | b. | radial
symmetry. | c. | bilateral symmetry. | d. | both radial and
bilateral symmetry. | | |
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24.
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What
do earthworms do to soil? a. | They damage it by tunneling. | b. | They add
moisture to it. | c. | They poison it with their wastes. | d. | They make it
more fertile with their wastes. | | |
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25.
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Sponges belong to the phylum a. | Platyhelminthes. | b. | Porifera. | c. | Cnidarian. | d. | Invertebrate. | | |
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26.
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Major
functions of animals include obtaining food and oxygen, keeping internal conditions stable, movement,
and a. | adaptation. | b. | reproduction. | c. | classification. | d. | fertilization. | | |
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27.
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A
balanced arrangement of parts is called a. | radiality. | b. | asymmetry. | c. | symmetry. | d. | bilaterality. | | |
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28.
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In
roundworms, wastes exit the body through the a. | anus. | b. | mouth. | c. | collar cell. | d. | pores. | | |
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29.
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What
type of worm may be the most abundant animal on Earth? a. | flatworms | b. | roundworms | c. | segmented
worms | d. | earthworms | | |
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30.
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The
joining of an egg cell and a sperm cell is called a. | stability. | b. | adaptation. | c. | asexual reproduction. | d. | fertilization. | | |
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Modified True/False
Indicate
whether the sentence or statement is true or false. If false, change the identified word or
phrase to make the sentence or statement true.
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31.
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Most
animals are invertebrates. _________________________
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32.
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The
body parts of animals with radial symmetry are arranged in a circle.
_________________________
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33.
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Water
enters a sponge through openings called collar cells. _________________________
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34.
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Cnidarians pull prey to their mouths with their stinging cells.
_________________________
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35.
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The
cnidarian body plan that is shaped like an upside-down bowl is called a polyp.
_________________________
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36.
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Coral
reefs are built by some cnidarians. _________________________
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37.
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If
certain types of worms are cut into pieces, a whole organism can grow from each piece.
_________________________
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38.
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A
type of worm with many linked sections is a flatworm. _________________________
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39.
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Animals must maintain a stable environment within their bodies to survive.
_________________________
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40.
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If
only one line can divide an object into mirror-image halves, the object is said to have radial
symmetry. _________________________
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Completion
Complete each sentence or
statement.
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41.
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The
process by which a single organism produces a new organism identical to itself is called
____________________ reproduction.
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42.
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Tissues combine to form a(n) ____________________ that performs a specific job for an
organism.
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43.
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Animals without backbones are known as ____________________.
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44.
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Classifying animals involves comparing their ____________________, a chemical that
controls an organism’s inherited characteristics.
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45.
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An
animal may have radial symmetry, bilateral symmetry, or ____________________ symmetry.
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46.
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Jellyfishes and sea anemones are examples of animals with ____________________
symmetry.
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47.
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_________________ are the simplest organisms with a brain.
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48.
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Sponges reproduce sexually and form a(n) ____________________, which is an immature
form of an animal that looks very different from an adult.
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49.
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Cnidarians that have the ____________________ body plan can swim freely.
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50.
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A sea
anemone is an example of a cnidarian with the ____________________ body plan.
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51.
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A
cnidarian expels undigested food through its ____________________.
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52.
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The
rocklike part of a coral reef is built up from the hard ____________________ of corals.
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53.
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A
coral reef begins to form as coral polyps undergo ____________________ reproduction over and over,
eventually producing millions of coral polyps.
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54.
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Planarians belong to the group of worms known as ____________________.
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55.
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A
tapeworm is a(n) ____________________ that lives inside more than one host during its life
cycle.
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56.
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Roundworms have a(n) ____________________ through which wastes exit.
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57.
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By
loosening soil and fertilizing it with their wastes, ____________________ improve the soil in which
they live.
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58.
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The
three stages of digestion of food are breakdown, ____________________, and the elimination of
wastes.
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59.
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A
structure or behavior that allows an animal to perform a basic function in its environment is called
a(n) ____________________.
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60.
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In
a(n) ____________________ circulatory system, blood moves only through tubes called blood
vessels.
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Short Answer
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Use the diagram to answer each question.
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61.
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What
level of organization is represented by A? What is the relationship between that level and the level
represented by B?
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62.
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Structure B is a section of bone. Identify and define the level of organization
represented by B.
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63.
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Structure C is a thigh bone. Identify and define the level of organization represented
by C.
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64.
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Identify and define the level of organization represented by structure
D.
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65.
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Which
of the levels of organization shown in the diagram is the highest level that a sponge
has?
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66.
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Which
of the levels of organization shown in the diagram does a segmented worm have?
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Use the diagram to answer each question.
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67.
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Identify animal A. Describe its body plan.
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68.
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Identify animal B, and tell whether it is parasitic or free-living.
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69.
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Identify animal C, and describe how it gets food.
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70.
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Identify animal D, and tell what feature distinguishes it from other worms. Support
your answer by referring to features that are visible in the diagram.
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71.
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Look
at animals A, B, and D. For each of these animals, identify the type of symmetry it
exhibits.
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72.
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Contrast the digestive systems of animals B and D.
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Essay
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73.
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Contrast the ways in which bilaterally symmetrical animals and radially symmetrical
animals move. Explain how each kind of symmetry influences the way in which an animal
moves.
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74.
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Describe how sponges obtain and digest food.
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75.
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What
is the term for asexual reproduction in sponges? Explain how the new individual forms.
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76.
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One
type of coral, called a soft coral, does not produce a hard skeleton. Would soft corals to build
coral reefs? Explain why or why not.
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77.
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Suppose you find a worm in the soil. How can you tell which of the three major phyla
of worms it belongs to by looking at its body shape?
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78.
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Crayfish and butterflies are both members of one phylum. Hagfish and turtles are both
members of a different phylum than the one to which crayfish and butterflies belong. Are crayfish
more closely related to butterflies or to hagfish? Explain your reasoning.
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79.
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A
tapeworm does not have a digestive system. Explain why a tapeworm can live without a digestive system
but an earthworm cannot.
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80.
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Describe asexual and sexual reproduction. How do offspring produced by asexual
reproduction differ from those produced by sexual reproduction.
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