Why are lampreys classified as vertebrates?
A) They lack gills.
B) They are ectothermic.
C) They have an exoskeleton.
D) Their nerve cord is surrounded by cartilage.
E) They lack jaws.
Correct Answer:
Verified
Q28: Which were the first tetrapods to move
Q29: Fins composed of a web of skin
Q30: Cartilaginous fishes differ from lampreys because they
A)
Q31: Which vertebrate group is the most diverse?
A)
Q32: A(n)_ protects the internal organs of ray-finned
Q34: Most _have swim bladders.
A) jawless fishes
B) ray-finned
Q35: Fins composed of rod-shaped bones surrounded by
Q36: Lampreys differ from other vertebrates because they
Q37: Why have populations of many ray -finned
Q38: A shark is a(n)
A) invertebrate chordate.
B) jawless
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