In the elasmobranchs,the sexes are separate and fertilization is _________.
Correct Answer:
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Q20: The cladistic use of the term "fish"
A)applies
Q21: In schooling,fish rely on sensitivity to vibration
Q22: The group designation _ was formerly considered
Q23: The class _ is composed of vertebrates
Q24: To replace water lost osmotically,marine fish
A)pump water
Q26: Marine bony fishes are
A)hypoosmotic regulators.
B)in osmotic equilibrium
Q27: The primary propulsive mechanism of a fish
Q28: Sharks remove excess sodium chloride from blood
Q29: The class _ is composed of vertebrates
Q30: The lungfishes
A)are all extinct.
B)do not really have
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