There are about 15,000 species in this phylum. The phylum includes earthworms, leeches, and marine worms known as polychaetes. Species in this phylum have metameric bodies. Metameric bodies are divided into segments called annuli.The annuli are covered in tiny hairs called setae. Setae help the worms move.Each segment contains parts of the organism's excretory, circulatory, reproductive, and nervous system! The head and the rear of the body is not segmented. The digestive system of species in this phylum runs the length of the body.Food is taken in at one end of the body and expelled at the other end. Annelids have two sets of muscles that help them move.here are about 15,000 species in this phylum. The phylum includes earthworms, leeches, and marine worms known as polychaetes. Species in this phylum have metameric bodies. Metameric bodies are divided into segments called annuli.
Kim Sutton is in her 16th season as Chico Stateâs head womenâs soccer coach and 22nd at the NCAA Division II level.
Of the top US universities in California, Caltech is the rankingâs highest-placed âsmallâ university, while the University of California, Santa Cruz climbed the highest number of ranks this year, from 307= in the world to 265=.