The notochord persists into adulthood in all chordates. True or False?
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Q56: To prevent dehydration, reptiles have:
A)embryos that lack
Q57: One adaptation that enables an animal to
Q58: Which vertebrate group has a three-chambered heart?
A)lobe-finned
Q59: A marsupial is a(n):
A)amphibian.
B)reptile.
C)bird.
D)mammal.
E)mollusk.
Q60: Which of the following BEST describes the
Q62: Hagfishes have three-chambered hearts, which improve gas
Q63: During embryonic development, the tail in mammals
Q64: All chordates have pharyngeal gill slits at
Q65: Cartilaginous fishes lack gills in their adult
Q66: The amnion creates an aquatic environment for
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