Question 1

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

Question 2

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. 
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.

Question 3

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) 3/4 
A) 1/10 
B) 1/5 
C) 1/3 
D) 2/3 
E) 3/4

Question 4

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) amoeba 
A) nematode 
B) fungus 
C) tsetse fly 
D) copepod 
E) amoeba

Question 5

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

Question 6

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) Agnathan 
A) Actinopterygii 
B) Amphibia 
C) Lissamphibia 
D) Reptiliomorpha 
E) Agnathan

Question 7

True toads belong to the family

Accepted Answer

A) Hylidae. 
B) Dendrobatidae. 
C) Rhynchocephalia. 
D) Ranidae. 
E) Bufonidae 
A) Hylidae. 
B) Dendrobatidae. 
C) Rhynchocephalia. 
D) Ranidae. 
E) Bufonidae

Question 8

__________ 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) Parthenogeny 
A) Regeneration 
B) Neoteny 
C) Metamorphosis 
D) Amplexus 
E) Parthenogeny

Question 9

Larval amphibians are usually __________ in their feeding habits.

Accepted Answer

A) sanguinivorous 
B) carnivorous 
C) herbivorous 
D) omnivorous 
E) insectivorous 
A) sanguinivorous 
B) carnivorous 
C) herbivorous 
D) omnivorous 
E) insectivorous

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

Question 11

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) Amniote 
A) Tetrapoda 
B) Gnathostome 
C) Apoda 
D) Agnatha 
E) Amniote

Pulmonary ventilation in amphibians with lungs is accomplished by

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

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

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

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

True toads belong to the family

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

Larval amphibians are usually __________ in their feeding habits.

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

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.

Zoology: an Evolutionary and Ecological Perspective

Cells, tissues, organs, and Organ Systems of Animals

Cell Division and Inheritance

Evolution: History and Evidence

Evolution and Gene Frequencies

Ecology: Preserving the Animal Kingdom

Animal Taxonomy, phylogeny, and Organization

Animal-Like Protists: the Protozoa

Multicellular and Tissue Levels of Organization

The Smaller Lophotrochozoan Phyla

Molluscan Success

Annelida: the Metameric Body Form

The Smaller Ecdysozoan Phyla

The Arthropods: Blueprint for Success

The Pancrustacea: Crustacea and Hexapoda

Ambulacraria: Echinoderms and Hemichordates

Chordata: Urochordata and Cephalochordata

The Fishes: Vertebrate Success in Water

Reptiles: Diapsid Amniotes

Birds: Reptiles by Another Name

Mammals: Synapsid Amniotes

Protection, support, and Movement

Communication I: Nervous and Sensory Systems

Communication II: the Endocrine System and Chemical Messengers

Circulation and Gas Exchange

Nutrition and Digestion

Temperature and Body Fluid Regulation

Reproduction and Development

Filters

Exam 19: Amphibians: the First Terrestrial Vertebrates

Pulmonary ventilation in amphibians with lungs is accomplished by

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

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

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

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

True toads belong to the family

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

Larval amphibians are usually __________ in their feeding habits.

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

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.

Zoology: an Evolutionary and Ecological Perspective

Cells, tissues, organs, and Organ Systems of Animals

Cell Division and Inheritance

Evolution: History and Evidence

Evolution and Gene Frequencies

Ecology: Preserving the Animal Kingdom

Animal Taxonomy, phylogeny, and Organization

Animal-Like Protists: the Protozoa

Multicellular and Tissue Levels of Organization

The Smaller Lophotrochozoan Phyla

Molluscan Success

Annelida: the Metameric Body Form

The Smaller Ecdysozoan Phyla

The Arthropods: Blueprint for Success

The Pancrustacea: Crustacea and Hexapoda

Ambulacraria: Echinoderms and Hemichordates

Chordata: Urochordata and Cephalochordata

The Fishes: Vertebrate Success in Water

Reptiles: Diapsid Amniotes

Birds: Reptiles by Another Name

Mammals: Synapsid Amniotes

Protection, support, and Movement

Communication I: Nervous and Sensory Systems

Communication II: the Endocrine System and Chemical Messengers

Circulation and Gas Exchange

Nutrition and Digestion

Temperature and Body Fluid Regulation

Reproduction and Development

Filters