Why are lampreys classified as vertebrates?
A) They are ectothermic.
B) They lack jaws.
C) They lack gills.
D) They have an exoskeleton.
E) Their nerve cord is surrounded by cartilage.
Correct Answer:
Verified
Q22: Lungfishes are classified as:
A)amphibians.
B)lobe-finned fishes.
C)jawless fishes.
D)ray-finned fishes.
E)cartilaginous
Q23: Lamprey populations introduced into the Great Lakes
Q24: Which were the first tetrapods to move
Q25: Lampreys differ from other vertebrates because they
Q26: Most _ have swim bladders.
A)marine mammals
B)lobe-finned fishes
C)jawless
Q28: Parasitic lampreys have:
A)sucker-like mouths lined with teeth.
B)bony
Q29: What is the advantage of paired appendages?
A)They
Q30: Why have populations of many ray-finned fish
Q31: A(n)_ protects the internal organs of ray-finned
Q32: Which vertebrate group is the most diverse?
A)Actinopterygii
B)Actinistia
C)Chondrichthyes
D)Mammalia
E)Reptilia
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