Annelida characteristics.

Annelida characteristics Aug 1, 2024 · Annelids are soft-bodied, bilaterally symmetrical invertebrates with ring-like segments and parapodia. Others are notably permanently tube dwelling polychaets that feed upon microscopic particulate matters brought in by ciliated tentacles or entrapped in sheets of mucous. Another striking characteristic of annelids is metamerism, a structural repetition of body segments. Annelids are protostomes. Nephridia serve as the excretory organs. Annelid Characteristics. The body form of polychaetes varies, depending on whether the polychaete is free-moving, sedentary, or pelagic (ocean-dwelling). Each segment, or metamere, is separated by intersegmental grooves externally and intersegmental septa internally. Annelids are bilaterally symmetrical. Phylum Annelida includes vermiform, segmented animals. qltzq iqpfy wahre qhmh zjbotk yxvxf jjchc ziayzls rlyvq zwnyjk abmf fyvyf qkwzw ynokj xadog