The bony fishes (Osteichthyes) are divided into two subclasses, Actinopterygii and Sarcopterygii, on the basis of
A) the chemical composition of the skeleton.
B) the structure of the jaw.
C) the structure and function of their fins.
D) the presence of a swim bladder.
E) their mode of reproduction.
Correct Answer:
Verified
Q13: All craniates have
A) a distinct head with
Q14: Vertebrae
A) are characteristic of all chordates.
B) are
Q15: Jawed vertebrates have jaws derived from
A) dermal
Q16: Many features unique to vertebrates develop from
Q17: Fishes are divided into two classes, Chondrichthyes
Q19: The limbs of tetrapods (amphibians, birds, reptiles
Q20: Lungfishes and amphibians are similar in that
A)
Q21: Most amphibians return to water to lay
Q22: Amphibians are not amniotes because
A) the whole
Q23: In amniote tetrapods
A) metamorphosis is absent.
B) cleavage
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