Which era is known as the "age of reptiles"?

Which era is known as the "age of reptiles"? 

A) Cenozoic
B) Mesozoic
C) Paleozoic
D) Devonian
E) Cambrian





Answer: B

Why is the amniotic egg considered an important evolutionary breakthrough?

Why is the amniotic egg considered an important evolutionary breakthrough? 

A) It has a shell that increases gas exchange.
B) It allows deposition of eggs in a terrestrial environment.
C) It prolongs embryonic development.
D) It provides insulation to conserve heat.
E) It permits internal fertilization to be replaced by external fertilization.







Answer: B

Which of these are amniotes?

Which of these are amniotes? 

A) amphibians
B) fishes
C) egg-laying mammals
D) placental mammals
E) More than one of these is correct.






Answer: E

What should be true of fossils of the earliest tetrapods?

What should be true of fossils of the earliest tetrapods?

A) They should show evidence of internal fertilization.
B) They should show evidence of having produced shelled eggs.
C) They should indicate limited adaptation to life on land.
D) They should be transitional forms with the fossils of chondrichthyans that lived at the same time.
E) They should feature the earliest indications of the appearance of jaws.








Answer: C