Why are lampreys classified as vertebrates?
A) They lack jaws.
B) Their nerve cord is surrounded by cartilage.
C) They are ectothermic.
D) They lack gills.
E) They have an exoskeleton.
Correct Answer:
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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
Q31: The skeletons of rays and skates are
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
Q37: Which vertebrate group is the most diverse?
A)
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