Question 1

A jointed exoskeleton is a characteristic of ________.

Accepted Answer

The answer of A jointed exoskeleton is a characteristic of...

Question 2

The skin and nervous tissues develop from which germ layer?

Accepted Answer

A)  ectoderm
B)  endoderm
C)  mesoderm
D)  mesoglea
E)  protoplasmF) C) and E)
G) A) and B)

Question 3

All animals with tissues have:

Accepted Answer

A)  symmetrical bodies.
B)  bilateral symmetry.
C)  radial symmetry.
D)  two germ layers.
E)  three germ layers.F) A) and E)
G) A) and D)

Question 4

Which cnidarian is the basis of an undersea habitat?

Accepted Answer

A)  sea cucumber
B)  hydra
C)  anemone
D)  jellyfish
E)  coralF) A) and D)
G) B) and D)

Question 5

The ________ is the embryonic germ layer that develops into nervous tissue.

Accepted Answer

The answer of The ________ is the embryonic germ layer...

Question 6

The low energy demands of nematodes allow them to survive without a:

Accepted Answer

A)  reproductive system.
B)  tubular gut.
C)  body cavity.
D)  skeleton.
E)  respiratory system.F) D) and E)
G) C) and E)

Question 7

The common ancestor of sponges and other animals was probably:

Accepted Answer

A)  unicellular.
B)  multicellular without tissues.
C)  multicellular with tissues but without organ systems.
D)  multicellular with tissues and a few organ systems.
E)  multicellular with tissues and many organ systems.F) None of the above
G) A) and B)

Question 8

Ecdysozoans:

Accepted Answer

A)  have trochophore larva.
B)  include mollusks, annelids, and flatworms.
C)  have a special feeding structure.
D)  have a body cavity that forms from the digestive system.
E)  periodically shed their outer body covering.F) All of the above
G) B) and C)

Question 9

A cnidarian that builds a calcium carbonate skeleton is a(n) :

Accepted Answer

A)  oyster.
B)  clam.
C)  snail.
D)  coral.
E)  crab.F) A) and E)
G) B) and E)

Question 10

Animals that have distinct right and left sides display ________ symmetry.

Accepted Answer

The answer of Animals that have distinct right and left...

Question 11

Charles Darwin wrote that members of the phylum ________ are particularly important for agriculture because they mix and aerate soil.

Accepted Answer

A)  Cnidaria
B)  Platyhelminthes
C)  Annelida
D)  Arthropoda
E)  NematodaF) A) and E)
G) A) and D)

Question 12

________ are characterized by having a pseudocoelom.

Accepted Answer

A)  Roundworms
B)  Annelids
C)  Arthropods
D)  Chordates
E)  CnidariansF) A) and B)
G) A) and E)

Question 13

A clam is a(n) :

Accepted Answer

A)  arthropod.
B)  mollusk.
C)  chordate.
D)  echinoderm.
E)  arachnid.F) A) and E)
G) A) and B)

Question 14

What characterizes a free-living flatworm?

Accepted Answer

A)  tubular gut
B)  hooks
C)  cuticle
D)  eyespots
E)  coelomF) B) and D)
G) A) and B)

Question 15

Anemones have no:

Accepted Answer

A)  endoderm.
B)  mesoderm.
C)  ectoderm.D) B) and C)
E) A) and C)

Question 16

Your job is to classify a newly discovered animal species. Your initial studies reveal that your specimen has tissues, organs, a head, and a coelom; has no segmentation; and has bilateral symmetry. To what phylum does this animal belong?

Accepted Answer

A)  Cnidaria
B)  Mollusca
C)  Annelida
D)  Platyhelminthes
E)  PoriferaF) A) and E)
G) B) and C)

Question 17

The Trichinella worm, which causes trichinosis, is a(n)________.

Accepted Answer

The answer of The Trichinella worm, which causes trichinosis, is...

Question 18

How does the skeletal system of an arachnid differ from that of a cephalopod?

Accepted Answer

Arachnids have an exoskeleton ...

Question 19

Which of the following animal phyla is distinguished by a lack of tissues?

Accepted Answer

A)  echinoderms
B)  flatworms
C)  annelids
D)  roundworms
E)  spongesF) B) and E)
G) A) and B)

Question 20

Chordates and echinoderms are both protostomes. True or False?

Accepted Answer

A) True 
 B)False

Exam 23: Animal Diversity I: Invertebrates

A cnidarian that builds a calcium carbonate skeleton is a(n) :

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Chordates and echinoderms are both protostomes. True or False?

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The Trichinella worm, which causes trichinosis, is a(n)________.

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A jointed exoskeleton is a characteristic of ________.

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The low energy demands of nematodes allow them to survive without a:

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________ are characterized by having a pseudocoelom.

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Your job is to classify a newly discovered animal species. Your initial studies reveal that your specimen has tissues, organs, a head, and a coelom; has no segmentation; and has bilateral symmetry. To what phylum does this animal belong?

Correct AnswerverifiedShow Answer

Animals that have distinct right and left sides display ________ symmetry.

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The common ancestor of sponges and other animals was probably:

Correct AnswerverifiedShow Answer

A clam is a(n) :

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Which cnidarian is the basis of an undersea habitat?

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What characterizes a free-living flatworm?

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All animals with tissues have:

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How does the skeletal system of an arachnid differ from that of a cephalopod?

Correct AnswerverifiedArachnids have an exoskeleton ...View AnswerShow Answer

Ecdysozoans:

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The ________ is the embryonic germ layer that develops into nervous tissue.

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The skin and nervous tissues develop from which germ layer?

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Which of the following animal phyla is distinguished by a lack of tissues?

Correct AnswerverifiedShow Answer

Charles Darwin wrote that members of the phylum ________ are particularly important for agriculture because they mix and aerate soil.

Correct AnswerverifiedShow Answer

Anemones have no:

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Arachnids have an exoskeleton ...
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