Question 1

The arthropod skeleton is composed of ______.

Accepted Answer

A)   cellulose
B)   peptidoglycan
C)   chitin
D)   glycogenE) None of the above
F) C) and D)

Question 2

Which of the following is a characteristic of all chordates?

Accepted Answer

A)   They all have vertebral columns.
B)   They all exhibit radial symmetry.
C)   They all have a notochord sometime during the life cycle.
D)   They all have an exoskeleton sometime during the life cycle.E) B) and D)
F) None of the above

Question 3

The figure below shows a planarian.Bilateral symmetry and a highly branched gastrovascular cavity all suggest that the planarian is a(n) ______.

Accepted Answer

A)   annelid
B)   mollusk
C)   chordate
D)   flatwormE) C) and D)
F) None of the above

Question 4

______ are the most diverse group of arthropods.

Accepted Answer

A)   Insects
B)   Millipedes
C)   Arachnids
D)   CrustaceansE) A) and B)
F) All of the above

Question 5

A(n) ______ is an example of a chordate that is not a vertebrate.

Accepted Answer

A)   lancelet
B)   echinoderm
C)   bird
D)   fishE) All of the above
F) B) and D)

Question 6

How do sponges differ from all other animals?

Accepted Answer

A)   Sponges exhibit radial symmetry.
B)   Sponges are autotrophs.
C)   Sponges lack a true body cavity.
D)   Sponges lack true tissues.E) B) and C)
F) B) and D)

Question 7

There are more species of ______ than of any other type of animal.

Accepted Answer

A)   nematodes
B)   molluscs
C)   arthropods
D)   chordatesE) A) and B)
F) A) and C)

Question 8

______ are characterized by stinging cells used for defense and for capturing prey.

Accepted Answer

A)   Annelids
B)   Sponges
C)   Cnidarians
D)   RoundwormsE) None of the above
F) A) and C)

Question 9

Almost every element of bird anatomy is modified for what?

Accepted Answer

A)   laying eggs
B)   eating seeds
C)   enhancement of flight
D)   singing unique songsE) C) and D)
F) A) and B)

Question 10

Which of these human characteristics evolved first?

Accepted Answer

A)   enlarged brain
B)   erect posture
C)   language
D)   loss of body hairE) C) and D)
F) A) and C)

Question 11

A true coelom is ______.

Accepted Answer

A)   completely lined with tissue derived from endoderm
B)   completely lined with tissue derived from mesoderm
C)   formed when a zygote develops into a blastula
D)   completely lined with tissue derived from ectodermE) C) and D)
F) A) and D)

Question 12

The platypus is a _______.

Accepted Answer

A)   bird
B)   marsupial
C)   eutherian
D)   monotremeE) B) and D)
F) B) and C)

Question 13

The common ancestor of all animals is likely to have been a(n) ______.

Accepted Answer

A)   colonial, flagellated protist
B)   colonial, ciliated protist
C)   colonial, flagellated bacterium
D)   spongeE) None of the above
F) All of the above

Question 14

Features unique to mammals include ______.

Accepted Answer

A)   the presence of hair
B)   extended parental care of the young
C)   being endotherms
D)   having no egg-laying membersE) All of the above
F) A) and B)

Question 15

Humans are chordates.Which animal group is most closely related to chordates?

Accepted Answer

A)   molluscs
B)   echinoderms
C)   annelids
D)   arthropodsE) A) and B)
F) B) and C)

Question 16

Annelids are most closely related to ______.

Accepted Answer

A)   chordates
B)   arthropods
C)   molluscs
D)   echinodermsE) A) and C)
F) C) and D)

Question 17

The lancelet is a(n) _____.

Accepted Answer

A)   annelid
B)   flatworm
C)   chordate
D)   tunicateE) B) and C)
F) None of the above

Question 18

Rays are a type of ______.

Accepted Answer

A)   tunicate
B)   cartilaginous fish
C)   jawless fish
D)   bony fishE) A) and C)
F) A) and D)

Question 19

What name is given to the food-trapping cells of sponges?

Accepted Answer

A)   phagocytes
B)   amoebocytes
C)   flame cells
D)   choanocytesE) A) and B)
F) B) and C)

Question 20

A(n) ______ is an example of a mollusc that does not have a shell.

Accepted Answer

A)   octopus
B)   snail
C)   squid
D)   oysterE) None of the above
F) B) and C)

Exam 17: The Evolution of Animals

A true coelom is ______.

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______ are characterized by stinging cells used for defense and for capturing prey.

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What name is given to the food-trapping cells of sponges?

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There are more species of ______ than of any other type of animal.

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Which of these human characteristics evolved first?

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______ are the most diverse group of arthropods.

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A(n) ______ is an example of a chordate that is not a vertebrate.

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The common ancestor of all animals is likely to have been a(n) ______.

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The figure below shows a planarian.Bilateral symmetry and a highly branched gastrovascular cavity all suggest that the planarian is a(n) ______.

Correct AnswerverifiedShow Answer

The lancelet is a(n) _____.

Correct AnswerverifiedShow Answer

Which of the following is a characteristic of all chordates?

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The arthropod skeleton is composed of ______.

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Annelids are most closely related to ______.

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A(n) ______ is an example of a mollusc that does not have a shell.

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Features unique to mammals include ______.

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The platypus is a _______.

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How do sponges differ from all other animals?

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Rays are a type of ______.

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Humans are chordates.Which animal group is most closely related to chordates?

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Almost every element of bird anatomy is modified for what?

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