(here-oo-din-EY-uh), organisms in this phylum possess chitinous (KITE-uh-nus) bristles known as setae.
The anterior portion of organisms in this phylum is known as the prostomium. Except for organisms in class Hirudinea (here-oo-din-EY-uh), organisms in this phylum possess chitinous (KITE-uh-nus) bristles known as setae. Most organisms in this phylum are hermaphroditic and reproduce by cross-fertilization. Their most notable feature is known as metamerism (meh-TAH-mer-izm), and describes a pattern of repeated segmentation. For 10 points, name this phylum of segmented worms that includes leeches and earthworms.
The anterior portion of organisms in this phylum is known as the prostomium.
{annelida} [or {annelids}]