EXAM 4 BIO 182 REVIEW QUESTIONS
AND ANSWERS
Which fish were thought to be extinct, but were actually found in living populations? -
Correct Answers -Coelacanths
Evolutionarily, the jaws of vertebrates developed from - Correct Answers -the 3rd
pharyngeal arch of jawless fishes
Which is an incorrect match of taxonomic category and common name? - Correct
Answers -Sarcopterygii = sharks and rays
Hagfish are classified as vertebrates, but they do not have a vertebral column. - Correct
Answers -true
Which of the following groups are tetrapods? - Correct Answers -lung fish
metamorphosis - Correct Answers -changing of one body form to another within a
species, such as the change from an aquatic tadpole to a terrestrial frog.
A frog loses its ability to undergo buccal pumping. What must happen to compensate for
this loss? - Correct Answers -The exchange of gases through the skin must increase.
What is a defining characteristic of members of the class Testudines? - Correct
Answers -hard shells
The nearest living relatives of crocodiles and alligators are - Correct Answers -birds
A distinguishing feature of the Squamata is their - Correct Answers -kinetic skull
Which are characteristics that distinguish mammals from other vertebrates? - Correct
Answers -endothermy
Eutherian mammals are uniquely defined by - Correct Answers -longer gestation
periods because of more highly developed placentas.
In addition to the frog, what other organisms are classified as modern amphibians? -
Correct Answers -toads and salamanders
AND ANSWERS
Which fish were thought to be extinct, but were actually found in living populations? -
Correct Answers -Coelacanths
Evolutionarily, the jaws of vertebrates developed from - Correct Answers -the 3rd
pharyngeal arch of jawless fishes
Which is an incorrect match of taxonomic category and common name? - Correct
Answers -Sarcopterygii = sharks and rays
Hagfish are classified as vertebrates, but they do not have a vertebral column. - Correct
Answers -true
Which of the following groups are tetrapods? - Correct Answers -lung fish
metamorphosis - Correct Answers -changing of one body form to another within a
species, such as the change from an aquatic tadpole to a terrestrial frog.
A frog loses its ability to undergo buccal pumping. What must happen to compensate for
this loss? - Correct Answers -The exchange of gases through the skin must increase.
What is a defining characteristic of members of the class Testudines? - Correct
Answers -hard shells
The nearest living relatives of crocodiles and alligators are - Correct Answers -birds
A distinguishing feature of the Squamata is their - Correct Answers -kinetic skull
Which are characteristics that distinguish mammals from other vertebrates? - Correct
Answers -endothermy
Eutherian mammals are uniquely defined by - Correct Answers -longer gestation
periods because of more highly developed placentas.
In addition to the frog, what other organisms are classified as modern amphibians? -
Correct Answers -toads and salamanders
