Question 1

Identify four of the features that terrestrial vertebrates had to evolve in order to adapt to a terrestrial environment?

Accepted Answer

These features could include:
1.A thick ...

Question 2

If the only chordate characteristic that adult sea squirts possess are gills,why are they classified as a chordate?

Accepted Answer

Answers may vary.It is true that adult s...

Question 3

Compare the characteristics of mammals and birds,noting the similarities and differences between the groups.Why don't we consider mammals and birds closely related with a common ancestor,since they are both "warm-blooded"?

Accepted Answer

Answers may vary.Mammals and birds share...

Question 4

Placental mammals that are predacious meat eaters with large and conical-shaped canines are

Accepted Answer

A)  cetaceans.
B)  chiroptera.
C)  carnivores.
D)  proboscidea.E) A) and B)
F) C) and D)

Question 5

Which of the following features were required for the the evolution of the amphibians?

Accepted Answer

A)  notochord,vertebrae,jaws,bony skeleton,lungs and 4 limbs
B)  notochord,vertebrae,jaws,bony skeleton,lungs and amniotic eggs
C)  notochord,vertebrae,jaws,cartilaginous skeleton,lungs and 4 limbs
D)  notochord,mammary glands,jaws,bony skeleton,lungs and 4 limbsE) A) and D)
F) A) and B)

Question 6

Which term can be applied to all of the vertebrates except for the jawless fish?

Accepted Answer

A)  Gnathostomes
B)  Endothermic
C)  Tetrapods
D)  AmniotesE) A) and C)
F) C) and D)

Question 7

All of the following are characteristics of vertebrates EXCEPT

Accepted Answer

A)  internal organs.
B)  vertebral columns.
C)  postanal tails.
D)  exoskeletons.
E)  skulls.F) A) and E)
G) B) and C)

Question 8

Explain the four features necessary to classify an organism as a vertebrate.

Accepted Answer

The answer should include:
1.P...

Question 9

Generally the respiratory system in birds

Accepted Answer

A)  is identical to the human breathing system.
B)  is merely accelerated by the flight muscles.
C)  resembles the positive pressure system of a frog.
D)  is a one-way circulation of air so constant oxygen absorption can meet the high oxygen demand.E) C) and D)
F) B) and D)

Question 10

The position of mammals in evolution is best described as

Accepted Answer

A)  they dominate life in the sea.
B)  they were among the first animals to live on land and their diversity is greater than all living things known.
C)  they arose from mammal-like reptiles in the Jurassic but remained small and insignificant while dinosaurs dominated the land.
D)  mammals gave rise to birds.
E)  All of the choices are correct.F) A) and B)
G) A) and E)

Question 11

The vertebrates that lack jaws are called

Accepted Answer

A)  rays.
B)  turtles.
C)  lampreys.
D)  eels.E) C) and D)
F) B) and C)

Question 12

In some chordates,the ________ is (are) replaced by ________.

Accepted Answer

A)  pharyngeal pouches; gills
B)  dorsal hollow nerve cord; a ventral solid nerve cord
C)  gill arches; pharyngeal pouches
D)  notochord; a dorsal hollow nerve cord
E)  a vertebral column; notochordF) A) and E)
G) B) and D)

Question 13

Which of these characteristics first developed in reptiles?

Accepted Answer

A)  amniotic egg
B)  scales on skin
C)  four-legged body
D)  skull and vertebral column
E)  animals living completely on landF) C) and E)
G) A) and B)

Question 14

Which of the following features are found in the lobe-finned fish but are not present in the cartilaginous fish?

Accepted Answer

A)  bony skeletons and lungs
B)  paired fins and a bony skeleton
C)  jaws and lungs
D)  vertebrae and amniotic eggsE) A) and B)
F) B) and C)

Question 15

What is the main reason that mammals underwent adaptive radiation after the demise of the dinosaurs?

Accepted Answer

A)  They had to adapt in order to physically survive the ice age.
B)  The mammals had little competition so it was easier for them to evolve into the niches that were once occupied by the dinosaurs.
C)  They had an "inner need" to become better suited to their environment.
D)  No answer choice is correct.E) A) and C)
F) B) and C)

Question 16

Monotremes

Accepted Answer

A)  are egg laying mammals.
B)  include the anteater and duck-billed platypus.
C)  nurse their young.
D)  All of the answer choices are correct.E) A) and B)
F) B) and C)

Question 17

Amphibians evolved from

Accepted Answer

A)  darters.
B)  sharks.
C)  bass and bluegill.
D)  sturgeon and catfish.
E)  lobe-finned fishes with lungs.F) None of the above
G) A) and C)

Question 18

The amphibians' common receptacle for the urinary,genital,and digestive canals is the

Accepted Answer

A)  vulva.
B)  glottis.
C)  cloaca.
D)  tympanum.
E)  operculum.F) B) and E)
G) A) and B)

Question 19

The duckbill platypus is different than most mammals because it

Accepted Answer

A)  lacks hair.
B)  is "cold-blooded."
C)  doesn't secrete milk.
D)  doesn't give birth,but lays eggs.
E)  All of the choices are correct.F) A) and B)
G) A) and C)

Question 20

All chordates are also vertebrates.

Accepted Answer

A) True 
 B)False

Exam 29: Vertebrate Evolution

Amphibians evolved from

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All of the following are characteristics of vertebrates EXCEPT

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Placental mammals that are predacious meat eaters with large and conical-shaped canines are

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What is the main reason that mammals underwent adaptive radiation after the demise of the dinosaurs?

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Monotremes

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Generally the respiratory system in birds

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Which of these characteristics first developed in reptiles?

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All chordates are also vertebrates.

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The vertebrates that lack jaws are called

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Identify four of the features that terrestrial vertebrates had to evolve in order to adapt to a terrestrial environment?

Correct AnswerverifiedThese features could include:1.A thick ...View AnswerShow Answer

Compare the characteristics of mammals and birds,noting the similarities and differences between the groups.Why don't we consider mammals and birds closely related with a common ancestor,since they are both "warm-blooded"?

Correct AnswerverifiedAnswers may vary.Mammals and birds share...View AnswerShow Answer

Which of the following features are found in the lobe-finned fish but are not present in the cartilaginous fish?

Correct AnswerverifiedShow Answer

The duckbill platypus is different than most mammals because it

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In some chordates,the ________ is (are) replaced by ________.

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Which term can be applied to all of the vertebrates except for the jawless fish?

Correct AnswerverifiedShow Answer

The amphibians' common receptacle for the urinary,genital,and digestive canals is the

Correct AnswerverifiedShow Answer

The position of mammals in evolution is best described as

Correct AnswerverifiedShow Answer

Explain the four features necessary to classify an organism as a vertebrate.

Correct AnswerverifiedThe answer should include:1.P...View AnswerShow Answer

If the only chordate characteristic that adult sea squirts possess are gills,why are they classified as a chordate?

Correct AnswerverifiedAnswers may vary.It is true that adult s...View AnswerShow Answer

Which of the following features were required for the the evolution of the amphibians?

Correct AnswerverifiedShow Answer

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These features could include:
1.A thick ...
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Answers may vary.Mammals and birds share...
View Answer

Correct Answer
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Correct Answer
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In some chordates,the is (are) replaced by .

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Correct Answer
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The answer should include:
1.P...
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Answers may vary.It is true that adult s...
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Correct Answer
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