Question 1

Which of the following has been suggested as a likely reason for global amphibian decline?

Accepted Answer

A)  ultraviolet radiation
B)  environmental pollutants
C)  acid deposition
D)  urban sprawl
E)  all of the answers are correctF) A) and B)
G) A) and C)

Question 2

__________ is a series of abrupt structural,physiological,and behavioral changes that transform a larval frog into an adult.

Accepted Answer

A)  Regeneration
B)  Neoteny
C)  Metamorphosis
D)  Amplexus
E)  ParthenogenyF) B) and E)
G) B) and D)

Question 3

This type of organism has been implicated in the recent global decline of amphibians.

Accepted Answer

A)  nematode
B)  fungus
C)  tsetse fly
D)  copepod
E)  amoebaF) A) and C)
G) None of the above

Question 4

True toads belong to the family

Accepted Answer

A)  Hylidae.
B)  Dendrobatidae.
C)  Rhynchocephalia.
D)  Ranidae.
E)  BufonidaeF) C) and E)
G) D) and E)

Question 5

The ancestral tetrapodomorph lineage which led to reptiles,birds,and mammals is called the ____________ lineage.

Accepted Answer

A)  Actinopterygii
B)  Amphibia
C)  Lissamphibia
D)  Reptiliomorpha
E)  AgnathanF) B) and C)
G) A) and B)

Question 6

Which of the following designations applies to 4-legged "crown group" descendants in the sarcopterygian lineage.Recall that "crown group" refers to 4-legged extant animals and their closest common ancestor.

Accepted Answer

A)  Tetrapoda
B)  Gnathostome
C)  Apoda
D)  Agnatha
E)  AmnioteF) C) and D)
G) B) and C)

Question 7

Pulmonary ventilation in amphibians with lungs is accomplished by

Accepted Answer

A)  the diaphragm.
B)  the ribs.
C)  ram ventilation.
D)  a buccal pump.
E)  countercurrent exchange.F) C) and E)
G) A) and B)

Question 8

The Global Amphibian Assessment estimates that this fraction of amphibians are threatened with extinction.

Accepted Answer

A)  1/10
B)  1/5
C)  1/3
D)  2/3
E)  3/4F) B) and E)
G) All of the above

Question 9

The sarcopterygian heart had two atria and a partially divided ventricle.Modern amphibians have two atria and an undivided ventricle.This seems like an evolutionary step backwards,but it is not.All of the following statements help us understand why the undivided ventricle is adaptive for amphibians except one.

Accepted Answer

A)  Because gas exchange occurs in the skin of amphibians, venous return of blood to the right side of the amphibian heart is often comprised of oxygenated blood.
B)  When an amphibian is submerged, its lungs are not in use.Blood returning to the right side of the heart and leaving the undivided ventricle can be shunted away from the lungs.
C)  Blood from the left atrium can bypass the ventricle and go directly into the conus arteriosus and the systemic circulation.
D)  Even though we don't understand how it occurs, the spiral valve in the conus arteriosus helps send less oxygenated blood from the right side of the heart to the lungs and more highly oxygenated blood from the left side of the heart to the systemic artery and the rest of the body.This situation is most likely to occur when the amphibian is on land.E) A) and B)
F) A) and C)

Question 10

The outermost structure of the ear of anuran amphibians is a/an

Accepted Answer

A)  pinna.
B)  semicircular canal.
C)  tympanic bulla.
D)  tympanic membrane.
E)  auditory meatus.F) A) and D)
G) A) and E)

Question 11

Larval amphibians are usually __________ in their feeding habits.

Accepted Answer

A)  sanguinivorous
B)  carnivorous
C)  herbivorous
D)  omnivorous
E)  insectivorousF) D) and E)
G) None of the above

Exam 19: Amphibians: the First Terrestrial Vertebrates

Which of the following has been suggested as a likely reason for global amphibian decline?

Correct Answer
verified

The Global Amphibian Assessment estimates that this fraction of amphibians are threatened with extinction.

Correct Answer
verified

The ancestral tetrapodomorph lineage which led to reptiles,birds,and mammals is called the ____________ lineage.

Correct Answer
verified

Larval amphibians are usually __________ in their feeding habits.

Correct Answer
verified

True toads belong to the family

Correct Answer
verified

__________ is a series of abrupt structural,physiological,and behavioral changes that transform a larval frog into an adult.

Correct Answer
verified

This type of organism has been implicated in the recent global decline of amphibians.

Correct Answer
verified

Which of the following designations applies to 4-legged "crown group" descendants in the sarcopterygian lineage.Recall that "crown group" refers to 4-legged extant animals and their closest common ancestor.

Correct Answer
verified

Correct Answer
verified

Pulmonary ventilation in amphibians with lungs is accomplished by

Correct Answer
verified

The outermost structure of the ear of anuran amphibians is a/an

Correct Answer
verified

Exam 19: Amphibians: the First Terrestrial Vertebrates

Which of the following has been suggested as a likely reason for global amphibian decline?

Correct AnswerverifiedShow Answer

The Global Amphibian Assessment estimates that this fraction of amphibians are threatened with extinction.

Correct AnswerverifiedShow Answer

The ancestral tetrapodomorph lineage which led to reptiles,birds,and mammals is called the ____________ lineage.

Correct AnswerverifiedShow Answer

Larval amphibians are usually __________ in their feeding habits.

Correct AnswerverifiedShow Answer

True toads belong to the family

Correct AnswerverifiedShow Answer

__________ is a series of abrupt structural,physiological,and behavioral changes that transform a larval frog into an adult.

Correct AnswerverifiedShow Answer

This type of organism has been implicated in the recent global decline of amphibians.

Correct AnswerverifiedShow Answer

Which of the following designations applies to 4-legged "crown group" descendants in the sarcopterygian lineage.Recall that "crown group" refers to 4-legged extant animals and their closest common ancestor.

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Pulmonary ventilation in amphibians with lungs is accomplished by

Correct AnswerverifiedShow Answer

The outermost structure of the ear of anuran amphibians is a/an

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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Correct Answer
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Correct Answer
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Correct Answer
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