Chondrichthyes includes:
A) whales.
B) lampreys.
C) all fishes.
D) frogs.
E) sharks.
Correct Answer:
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Q32: Which vertebrate group is the most diverse?
A)Actinopterygii
B)Actinistia
C)Chondrichthyes
D)Mammalia
E)Reptilia
Q33: Lampreys have reduced the size of commercial
Q34: A shark is a(n):
A)bony fish.
B)cartilaginous fish.
C)jawless fish.
D)amphibian.
E)invertebrate
Q35: The skeletons of rays and skates are
Q36: A lamprey is a(n):
A)bony fish.
B)cartilaginous fish.
C)jawless fish.
D)amphibian.
E)invertebrate
Q38: Fins composed of a web of skin
Q39: Cartilaginous fishes are characterized by:
A)bony skeletons.
B)four-chambered hearts.
C)lungs
Q40: Cartilaginous fishes differ from lampreys because they:
A)lack
Q41: Why do amphibians need a moist environment?
A)The
Q42: Which characteristic do birds share with mammals?
A)a
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