The skeletons of rays and skates are made of
A) chitin.
B) bone.
C) protein slime.
D) cartilage.
E) muscle.
Correct Answer:
Verified
Q26: Parasitic lampreys have
A) sucker- like mouths lined
Q27: A shark is a(n)
A) jawless fish.
B) invertebrate
Q28: A lamprey is a(n)
A) amphibian.
B) jawless fish.
C)
Q29: What is the advantage of paired appendages?
A)
Q30: The characteristic that separates cartilaginous fishes from
Q32: Why are lampreys classified as vertebrates?
A) They
Q33: Chondrichthyes includes
A) all fishes.
B) lampreys.
C) sharks.
D) frogs.
E)
Q34: Lampreys differ from other vertebrates because they
Q35: Lamprey populations introduced into the Great Lakes
Q36: Fins composed of a web of skin
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