An example of a nonvertebrate chordate is:
A) a shark
B) Amphioxus
C) a starfish
D) a lamprey
Correct Answer:
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Q44: Endothermy and heterodonty together are characteristic of
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
Q50: Vertebrates include:
A)birds
B)mammals
C)reptiles
D)all of the above
Q51: The phylum Chordata and the phylum Arthropoda
Q52: Endothermy refers to:
A)maintaining stable body temperature through
Q53: Diphyodonty refers to:
A)the development of two sets
Q54: The first jaws evolved from:
A)gill bars
B)vertebral spines
C)pectoral
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