What is the advantage of paired appendages?
A) They improve mobility.
B) They protect the nerve cord.
C) They provide internal support for the animal.
D) They improve the sensory ability.
E) They increase the metabolic rate, making animals endothermic.
Correct Answer:
Verified
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
Q27: Why are lampreys classified as vertebrates?
A)They are
Q28: Parasitic lampreys have:
A)sucker-like mouths lined with teeth.
B)bony
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
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
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