Q. Nereis, Pheretima (Earthworm) and Hirudinaria (blood sucking leech) are examples of which Phylum? Answer:
Annelida
Notes: The annelids (Annelida, from Latin anellus, "little ring"), also known as the ringed worms or segmented worms, are a large phylum, with over 22,000 extant species including ragworms, earthworms, and leeches.