A(n) ________ protects the internal organs of ray-finned fishes.
A) notochord
B) internal cartilage skeleton
C) internal bony skeleton
D) exoskeleton made of chitin
E) exoskeleton made of cartilage
Correct Answer:
Verified
Q26: Most _ have swim bladders.
A)marine mammals
B)lobe-finned fishes
C)jawless
Q27: Why are lampreys classified as vertebrates?
A)They are
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
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
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