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A jawless fish, which lays eggs in fresh...

A jawless fish, which lays eggs in fresh wa- ter and whose ammocoetes larvae after meta- morphosis return to the ocean is

A

Eptatretus

B

Myxine

C

Neomyxine

D

Petromyzon

Text Solution

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The correct Answer is:
D
Petromyzon (the lamprey) belongs to the section Agnatha of the subphylum-Vertebrata . They have long, greenish brown , cylindrical body with smooth scaleless, slimy skin, jawless mouth, etc. They lay eggs in freshwater, but their ammocoete larvae (lower) after metamorphosis return to the ocean.
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