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Question

Ammocoete larva belongs to

A
Petromyzon
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B
Myxine
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C
Amphioxus
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D
Balanoglossus
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Solution

The correct option is A Petromyzon
Ammocoete larva is the larval stage of the primitive jawless fish, called as the lamprey or Petromyzon. Adult lampreys spawn in rivers and then die. The young larvae, ammocoetes, spend several years in the rivers, where they live burrowed in fine sediment, filter feeding on detritus and microorganisms. Then, ammocoetes undergo a metamorphosis lasting several months.
So, the correct answer is option A.

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