Q14: All bony fishes have a pneumatic duct
Q15: The ray-finned fishes are the most numerous
Q16: The earliest fishlike vertebrates were a paraphyletic
Q17: The ampullary organs of Lorenzini are receptors
Q18: Despite its name,the ectoparasitic marine lamprey Petromyzon
Q20: In North America,both marine and freshwater lampreys
Q21: The control of the lamprey has been
Q22: Among the fastest swimmers,tunas swim by
A)undulating their
Q23: The coelocanths
A)are all extinct.
B)were found off the
Q24: A representative of chondrosteans is
A)the gar.
B)the sturgeon.
C)the
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