Question 1

A notochord is

Accepted Answer

A)  a strip of cartilage that forms a back and tail in all vertebrates.
B)  a stiff ventral supporting rod.
C)  replaced by the nerve cord during development.
D)  a stiff dorsal supporting rod that is replaced by the vertebral column during development.
E)  All of the choices are correct.F) A) and B)
G) A) and C)

Question 2

Sharks

Accepted Answer

A)  lack bony skeletons.
B)  have dermal denticles.
C)  have a keen sense of smell.
D)  have teeth derived from epidermal scales.
E)  All of the choices are correct.F) A) and E)
G) B) and E) E

Question 3

The mammalian lineages include

Accepted Answer

A)  placental mammals.
B)  marsupials.
C)  monotremes.
D)  All of the answer choices are correct.
E)  No answer choice is correct.F) All of the above
G) B) and D)

Question 4

Which of these characteristics is NOT found in the amphibians?

Accepted Answer

A)  thin moist skin
B)  two-chambered heart
C)  small inefficient lungs
D)  aquatic larvae
E)  eggs with gelatinous coveringF) A) and D)
G) B) and D)

Question 5

________ were the first vertebrates to live on land and they evolved from ________.

Accepted Answer

A)  Amphibians; fish
B)  Reptiles; amphibians
C)  Mammals; reptiles
D)  Amphibians; lanceletsE) All of the above
F) A) and B) A

Question 6

Name the two groups of organisms that are classified as nonvertebrate chordates and indicate their unique features.

Accepted Answer

The cephalochordates (lancelets)and uroc...

Question 7

Reptiles evolved from ________ ancestors and were abundant by the ________ period.

Accepted Answer

A)  mammals; Carboniferous
B)  fish; Devonian
C)  echinoderms; Cambrian
D)  amphibians; PermianE) A) and B)
F) None of the above

Question 8

All of the following statements concerning birds are true EXCEPT

Accepted Answer

A)  birds have small,relatively under-developed brains.
B)  some birds do not have the ability to fly.
C)  birds have acute vision.
D)  birds use the sun,stars,and the Earth's magnetic field to guide them.E) A) and B)
F) B) and C)

Question 9

Which feature would have given the jawed fish an evolutionary advantage over the jawless fish when it came time to hunt for food?

Accepted Answer

A)  The evolution of jaws from the gill slits that would enable them to bite more efficiently.
B)  The evolution of an ectothermic lifestyle so they could regulate their body temperature based upon the environment.
C)  Gills that would increase the efficiency of their breathing.
D)  A cartilaginous endoskeleton that would provide for more power while swimming.
E)  A skin that is nonscaly that also allows for an increased respiration ability.F) D) and E)
G) None of the above

Question 10

Which of the following statements best describes the jawless fishes?

Accepted Answer

A)  Ectotherms that have a bony skeleton.
B)  Ectotherms that have a smooth nonscaly skin.
C)  Endotherms that have a smooth nonscaly skin.
D)  Vertebrates that have scales and are ectothermic.E) A) and D)
F) All of the above

Question 11

Which of the following reptilian features enabled them to adapt to a terrestrial environment?

Accepted Answer

A)  A dry skin,ectothermy and external fertilization
B)  Two pairs of paired limbs,a septum that divides the ventricle,and well-developed kidneys
C)  Skin that allows for respiration,a septum that divides the ventricle and an amniotic egg
D)  Efficient respiration,ectothermy and external fertilization
E)  Live birth,efficient excretion and two pairs of limbsF) A) and E)
G) A) and B)

Question 12

The circulatory pathways of vertebrates are pictured.Briefly differentiate between the pathways and identify the pathways found in:
• amphibians and reptiles
• fishes
• some reptiles,birds and mammals.
Pathway A
Pathway B
Pathway C

Accepted Answer

Pathway A is found in fishes.This is a s...

Question 13

Lungless salamanders lack lungs and breathe through their skins after they lose their gills.You would expect lungless salamanders to

Accepted Answer

A)  prefer drier habitats.
B)  prefer stagnant water.
C)  be larger than most salamanders.
D)  be restricted to smaller and/or thinner body plans.E) All of the above
F) B) and D) D

Question 14

Based on molecular data and skull features,what reptile(s) has an independent lineage from all other reptiles?

Accepted Answer

A)  lizards
B)  snakes
C)  turtles
D)  crocodiles
E)  lizards and crocodiles have independent lineagesF) A) and E)
G) All of the above

Question 15

Which of the following groups had made their appearance during the Ordovician period?

Accepted Answer

A)  jawless and jawed fish
B)  jawed fish and amphibians
C)  amphibians and reptiles
D)  reptiles and mammals
E)  All of these groups had appeared by the Ordovician period.F) A) and B)
G) A) and C)

Question 16

Mammals are different from birds in all these characteristics EXCEPT

Accepted Answer

A)  hair.
B)  mammary glands.
C)  constant body temperature.
D)  young born alive.E) A) and B)
F) B) and D)

Question 17

The cephalochordates possess an atrium that is used to filter microscopic food particles out of the water.

Accepted Answer

A) True 
 B)False

Question 18

Several lineages of reptiles evolved from a common ancestral stem reptile,each adapting to different ways of life.

Accepted Answer

A) True 
 B)False

Question 19

Characteristics of birds include all of the following EXCEPT

Accepted Answer

A)  aquatic reproduction.
B)  endotherms.
C)  modified reptilian scales as feathers.
D)  hard-shelled eggs.
E)  a modified skeleton with a fused collarbone and a keel.F) A) and B)
G) All of the above

Question 20

Amphibians were the dominant animal life during the ________ period.

Accepted Answer

A)  Jurassic
B)  Carboniferous
C)  Devonian
D)  Silurian
E)  CambrianF) A) and E)
G) B) and D)

Exam 29: Vertebrate Evolution

A notochord is

Correct AnswerverifiedShow Answer

Sharks

Correct AnswerverifiedE

The mammalian lineages include

Correct AnswerverifiedShow Answer

Which of these characteristics is NOT found in the amphibians?

Correct AnswerverifiedShow Answer

________ were the first vertebrates to live on land and they evolved from ________.

Correct AnswerverifiedA

Name the two groups of organisms that are classified as nonvertebrate chordates and indicate their unique features.

Correct AnswerverifiedThe cephalochordates (lancelets)and uroc...View AnswerShow Answer

Reptiles evolved from ________ ancestors and were abundant by the ________ period.

Correct AnswerverifiedShow Answer

All of the following statements concerning birds are true EXCEPT

Correct AnswerverifiedShow Answer

Which feature would have given the jawed fish an evolutionary advantage over the jawless fish when it came time to hunt for food?

Correct AnswerverifiedShow Answer

Which of the following statements best describes the jawless fishes?

Correct AnswerverifiedShow Answer

Which of the following reptilian features enabled them to adapt to a terrestrial environment?

Correct AnswerverifiedShow Answer

The circulatory pathways of vertebrates are pictured.Briefly differentiate between the pathways and identify the pathways found in: • amphibians and reptiles • fishes • some reptiles,birds and mammals. Pathway A Pathway B Pathway C

Correct AnswerverifiedPathway A is found in fishes.This is a s...View AnswerShow Answer

Lungless salamanders lack lungs and breathe through their skins after they lose their gills.You would expect lungless salamanders to

Correct AnswerverifiedD

Based on molecular data and skull features,what reptile(s) has an independent lineage from all other reptiles?

Correct AnswerverifiedShow Answer

Which of the following groups had made their appearance during the Ordovician period?

Correct AnswerverifiedShow Answer

Mammals are different from birds in all these characteristics EXCEPT

Correct AnswerverifiedShow Answer

The cephalochordates possess an atrium that is used to filter microscopic food particles out of the water.

Correct AnswerverifiedShow Answer

Several lineages of reptiles evolved from a common ancestral stem reptile,each adapting to different ways of life.

Correct AnswerverifiedShow Answer

Characteristics of birds include all of the following EXCEPT

Correct AnswerverifiedShow Answer

Amphibians were the dominant animal life during the ________ period.

Correct AnswerverifiedShow Answer

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were the first vertebrates to live on land and they evolved from .

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A

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The cephalochordates (lancelets)and uroc...
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Reptiles evolved from ancestors and were abundant by the period.

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Pathway A is found in fishes.This is a s...
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D

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