In humans, one pair of pharyngeal pouches become the tube-shaped organ called the
A) esophagus.
B) trachea.
C) Eustachian tube.
D) bronchial tube.
Correct Answer:
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Q25: In terms of number of species, the
Q26: In addition to a vertebral column, all
Q27: Amphibians are thought to have evolved from
A)ray-finned
Q28: Small, fishlike marine chordates, pointed at both
Q31: Amphibians are not completely free to live
Q32: Reptiles can maintain their internal body temperature
Q33: Mammals are the only vertebrates to possess
A)hair.
B)single
Q34: The only marsupial mammal living in North
Q35: Which of the following is considered the
Q58: The following classes or superclasses of fish
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