Question 1

Which of the following statements concerning animal taxonomy is (are)  true?
1)  Animals are more closely related to plants than to fungi.
2)  All animal clades based on body plan have been found to be incorrect.
3)  Kingdom Animalia is monophyletic.
4)  Only animals reproduce by sexual means.
5)  Animals are thought to have evolved from flagellated protists similar to modern choanoflagellates.

Accepted Answer

A)   5 only
B)   1 and 3
C)   3 and 5
D)   3, 4, and 5

Question 2

As a result of harvesting a higher proportion of older and larger cod and other fish species for food,

Accepted Answer

A)   the number of fish in these populations has increased dramatically.
B)   the age and size of fish reaching sexual maturity have decreased.
C)   many new species of predators have evolved in these regions.
D)   the affected fish species have stopped reproducing.
E)   many of the fish in these populations have started to reproduce asexually.

Question 3

Please use the following information to answer the question(s)  below.
The most recently discovered phylum in the animal kingdom (1995)  is the phylum Cycliophora. It includes three species of tiny organisms that live in large numbers on the outsides of the mouthparts and appendages of lobsters. When in the feeding stage, a cycliophoran permanently attaches to the lobster via an adhesive disk and collects scraps of food from its host's feeding by capturing the scraps in a current created by a ring of cilia. Its body is sac-like and has a U-shaped intestine that brings the anus close to the mouth. Cycliophorans are eucoelomate (have a body cavity that is a coelom)  and do not molt (though their host does) .
-Basing your inferences on information in the previous paragraph, to which clade(s)  should cycliophorans belong?
1)  Eumetazoa
2)  Deuterostomia
3)  Bilateria
4)  Ecdysozoa
5)  Lophotrochozoa

Accepted Answer

A)   1 only
B)   1 and 3 only
C)   1, 3, and 5 only
D)   2, 3, and 4 only
E)   2, 3, and 5 only

Question 4

-Which of the following is a point of conflict between the phylogenetic analyses presented in these two figures?

Accepted Answer

A)   the relationship of taxa of segmented animals to taxa of nonsegmented animals
B)   that sponges are basal animals
C)   that chordates are deuterostomes
D)   the evolutionary relationship between Nematoda and Arthropoda

Question 5

Which of these would a paleontologist be most likely to do in order to determine whether a fossil represents a reptile or a mammal?

Accepted Answer

A)   Look for the presence of milk-producing glands.
B)   Look for the mammalian characteristics of a four-chambered heart and a diaphragm.
C)   Because mammals are eutherians, look for evidence of a placenta.
D)   Use molecular analysis to look for the protein keratin.
E)   Examine the teeth to determine how sharp or ground down they are.

Question 6

A new species of aquatic chordate is discovered that closely resembles an ancient form. It has the following characteristics: external armor of bony plates, no paired lateral fins, and a suspension-feeding mode of nutrition. In addition to these, it will probably have which of the following characteristics?

Accepted Answer

A)   legs
B)   no jaws
C)   an amniotic egg
D)   endothermy

Question 7

Which of these are amniotes?

Accepted Answer

A)   amphibians
B)   fishes
C)   mammals
D)   placental mammals only
E)   egg-laying mammals only

Question 8

The most ancient branch point in animal phylogeny is that between having

Accepted Answer

A)   radial and bilateral symmetry.
B)   a well-defined head and no head.
C)   true tissues and no tissues.
D)   a body cavity and no body cavity.

Exam 27: The Rise of Animal Diversity

-Which of the following is a point of conflict between the phylogenetic analyses presented in these two figures?

Correct Answer
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Which of these are amniotes?

Correct Answer
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Which of these would a paleontologist be most likely to do in order to determine whether a fossil represents a reptile or a mammal?

Correct Answer
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Correct Answer
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Correct Answer
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As a result of harvesting a higher proportion of older and larger cod and other fish species for food,

Correct Answer
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The most ancient branch point in animal phylogeny is that between having

Correct Answer
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Correct Answer
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Exam 27: The Rise of Animal Diversity

-Which of the following is a point of conflict between the phylogenetic analyses presented in these two figures?

Correct AnswerverifiedShow Answer

Which of these are amniotes?

Correct AnswerverifiedShow Answer

Which of these would a paleontologist be most likely to do in order to determine whether a fossil represents a reptile or a mammal?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

As a result of harvesting a higher proportion of older and larger cod and other fish species for food,

Correct AnswerverifiedShow Answer

The most ancient branch point in animal phylogeny is that between having

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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