All chordates have pharyngeal gill slits at some point during their development. True or False?
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Q59: A marsupial is a(n):
A)amphibian.
B)reptile.
C)bird.
D)mammal.
E)mollusk.
Q60: Which of the following BEST describes the
Q61: The notochord persists into adulthood in all
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Q65: Cartilaginous fishes lack gills in their adult
Q66: The amnion creates an aquatic environment for
Q67: Craniates have skulls made of either bone
Q68: The shelled egg of reptiles prevents the
Q69: The skeletons of ray-finned fishes are made
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