External segmentation is absent but inte...

External segmentation is absent but internal segmentation is present in

A

Polychaeta

B

Oligochaeta

C

Archiannelida

D

Hirudinea

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The correct Answer is:

C

Archiannelida is a group of small primitive or secondarily simplified annelid worms lacking external segmentation and resembling polychaeta larva.

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