Endothermy and heterodonty together are characteristic of the:
A) chordates
B) vertebrates
C) land vertebrates
D) mammals
Correct Answer:
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Q39: Homologies that appeared most recently and are
Q40: Similarities in the anatomy of species that
Q41: Which of the following is not a
Q42: The notochord is:
A)an internal skeletal element
B)a nerve
Q43: All chordates possess at some point in
Q45: A life spent totally on land was
Q46: Ectotherms maintain a constant body temperature by:
A)internal
Q47: Mammals did not become the dominant form
Q48: Dinosaurs belong to the class:
A)Amphibia
B)Aves
C)Mammalia
D)Reptilia
Q49: An example of a nonvertebrate chordate is:
A)a
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