Question 1

Lophotrochozoa are animals that are organized circularly,so no matter how they are sliced in half longitudinally,mirror images are obtained.

Accepted Answer

A) True 
 B)False

Question 2

Which of the following organisms exhibit complete metamorphosis?

Accepted Answer

A)  crayfish
B)  starfish
C)  grasshoppers
D)  butterfly
E)  lobstersF) A) and C)
G) A) and E)

Question 3

Which type of animal symmetry produces mirror images of each other no matter how the animal is sliced longitudinally?

Accepted Answer

A)  radial symmetry
B)  asymmetrical symmetry
C)  bilateral symmetry
D)  asymmetrical symmetry and bilateral symmetry
E)  None of the answer choices is correct.F) A) and D)
G) A) and B)

Question 4

Which of the following characteristics is NOT true about deuterostomes?

Accepted Answer

A)  The second opening during embryonic development becomes the mouth.
B)  They include the echinoderms and humans.
C)  They have a coelom.
D)  They include the simplest of invertebrates.
E)  They are typically more advanced than protostomes.F) All of the above
G) C) and E)

Question 5

Which statement is NOT correct about the roundworms?

Accepted Answer

A)  There are three layers of tissues in the body.
B)  Roundworms have a tube-within-a-tube body plan.
C)  There is an internal body cavity called a pseudocoelom.
D)  Roundworms have a smooth,unsegmented outside body wall.
E)  Roundworms are essentially no more than parasitic flatworms that have lost their need to be flat.F) B) and C)
G) C) and E)

Question 6

Which of these is NOT associated with a roundworm infection?

Accepted Answer

A)  hookworm
B)  trichinosis
C)  elephantiasis
D)  tapeworm
E)  pinwormF) B) and D)
G) C) and D)

Question 7

Both corals and calcareous sponges have calcium carbonate structures.What is the relationship between these two groups?

Accepted Answer

A)  The calcareous sponges were ancestors of the corals.
B)  The corals were ancestors of the calcareous sponges.
C)  Both use the calcium carbonate to form a rock-like or crusty basal skeletal structure.
D)  The corals are actually colonial forms of the independent calcareous sponges.
E)  The sponges use calcium carbonate to form sharp spicules,while the corals independently use the same material to form a skeleton.F) D) and E)
G) C) and D)

Question 8

A hydra moves via

Accepted Answer

A)  nematocysts.
B)  alternation of generations.
C)  contraction of the nerve net.
D)  muscle and nerve fibers.
E)  muscular fibers in the mesoglea.F) A) and B)
G) A) and C)

Question 9

Which of the following are NOT cnidaria?

Accepted Answer

A)  corals
B)  planaria
C)  sea anemones
D)  hydrozoa
E)  Portuguese man-of-warF) A) and D)
G) B) and C)

Question 10

It is NOT correct to say that arthropods have

Accepted Answer

A)  a solid ventral nerve cord.
B)  a variety of respiratory organs.
C)  a well-developed nervous system.
D)  jointed appendages and a segmented body.
E)  a tough exoskeleton that grows by expansion.F) All of the above
G) None of the above

Question 11

The largest animal group,both in number of species and number of individuals,is the

Accepted Answer

A)  annelids.
B)  crustacea.
C)  insects.
D)  reptiles.
E)  fishes.F) A) and D)
G) A) and E)

Question 12

Which difference distinguishes protostomes from deuterostomes?

Accepted Answer

A)  One has a nervous system,and one doesn't.
B)  Their embryonic development is different.
C)  One has a circulatory system and one doesn't.
D)  One has cephalization and one doesn't.
E)  One has a notochord and one doesn't.F) B) and D)
G) A) and E)

Question 13

Respiratory structures in insects are

Accepted Answer

A)  commonly termed book lungs.
B)  spiracles and tracheae.
C)  hemolymphic.
D)  lamellae.
E)  lungs.F) A) and B)
G) None of the above

Question 14

What system do the cnidaria have that sponges lack?

Accepted Answer

A)  respiratory
B)  nervous
C)  circulatory
D)  excretory
E)  reproductiveF) A) and D)
G) B) and D)

Question 15

Sea stars reproduce

Accepted Answer

A)  by budding.
B)  by asexual processes alone.
C)  asexually by fragmentation.
D)  by sexual processes only.
E)  by sexual means and also by asexual fragmentation.F) A) and E)
G) B) and C)

Question 16

Why are real bath sponges so soft?

Accepted Answer

A)  The silica is washed away and the calcium carbonate remains.
B)  The spongin spicules are washed away and the silky silica remains.
C)  The choanocytes are softer and the amoebocytes are washed away.
D)  The harder silica or calcium spicules are absent and the softer spongin remains.
E)  The silica and spicules are washed away and the spongin treated with softening chemicals.F) A) and E)
G) C) and D)

Question 17

Which feature is not found in the lophotrochozoa?

Accepted Answer

A)  As embryos,they have two germ layers that develop into their body systems.
B)  aquatic lifestyle
C)  bilaterally symmetrical during some stage of their development
D)  use a lophophore as a feeding apparatus
E)  They are protostomes.F) D) and E)
G) None of the above

Question 18

Earthworms differ from most of the marine annelids in that earthworms

Accepted Answer

A)  lack setae that marine annelids have.
B)  lack paddle-like parapodia that marine annelids have.
C)  have segments,while marine annelids do not.
D)  develop from a larval form,while marine annelids do not.
E)  have well-developed brains and sensory organs in the head region,while marine annelids do not.F) A) and E)
G) A) and D)

Question 19

The segments of a tapeworm consisting primarily of eggs,which hang in bags as a long chain behind the head,are called

Accepted Answer

A)  proglottids.
B)  cercariae.
C)  sporocysts.
D)  scolexes.
E)  glycocalyxes.F) All of the above
G) B) and D)

Question 20

Which statement about arachnids is NOT true?

Accepted Answer

A)  Ticks and mites are often parasitic.
B)  Spiders and scorpions are predators.
C)  Spiders have trachea for respiration.
D)  Spiders have a pair of fangs which release poison.
E)  The body parts include a cephalothorax and an abdomen.F) A) and E)
G) None of the above

Exam 31: Animals: Part I

The segments of a tapeworm consisting primarily of eggs,which hang in bags as a long chain behind the head,are called

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The largest animal group,both in number of species and number of individuals,is the

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Which statement is NOT correct about the roundworms?

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Which of the following organisms exhibit complete metamorphosis?

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Sea stars reproduce

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Respiratory structures in insects are

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Which of these is NOT associated with a roundworm infection?

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Which type of animal symmetry produces mirror images of each other no matter how the animal is sliced longitudinally?

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A hydra moves via

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Which of the following are NOT cnidaria?

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Which difference distinguishes protostomes from deuterostomes?

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Which statement about arachnids is NOT true?

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Which feature is not found in the lophotrochozoa?

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What system do the cnidaria have that sponges lack?

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It is NOT correct to say that arthropods have

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Which of the following characteristics is NOT true about deuterostomes?

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Earthworms differ from most of the marine annelids in that earthworms

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Why are real bath sponges so soft?

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Both corals and calcareous sponges have calcium carbonate structures.What is the relationship between these two groups?

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Lophotrochozoa are animals that are organized circularly,so no matter how they are sliced in half longitudinally,mirror images are obtained.

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