One of the following is not an Annelid
(a) Nereis
(b) Earthworm
(c) Leech
(d) Urchins
Answer-(d)
Solution- Nereis, earthworm and leech belong to phylum Annelida. It is a group of animals having segmented body without spines and their body surface is covered with cuticles
Urchin belongs to phylum Echinodermata. It is a marine animal with globe like shape and radial symmetry. Its body is covered with long spines for protection.
The correct answer is- d) Urchins.