Question

Ammocoete larva occurs in the life-history of
A) Lamprey
B) Sea urchin
C) Balanoglossus
D) Ascidian

Answer 1

ANSWER
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THE ANSWER IS SEA URCHIN

Answer 2

Ammocoete larva occurs in the life-history of A) Lamprey.

The larval stage of the primitive lamprey is called as the Ammocoete larva. This has typical Amphioxus character that is the character that depicts or present in chordates.

They feed on floating planktons and hence have a large pharynx that operates through the gills sets. They cause a wide range of economic damage to the artificial commercial fisheries. They are hard to kill when present inside hosts.