WebEarthworms are big segmented worms that belong to the Phylum Annelida, Class Clitellata, and sub class Oligochaeta. Leeches are also worms belonging to Phylum Annelida, Class … WebJul 26, 2024 · The sexes may be separate (e.g., Nereis) or united (e.g. earthworm, leech). Development is mostly direct (e.g, earthworm). There is indirect development in Nereis. Larva, when present is trochophore. Multiple Choice Questions on Phylum Annelida for NEET: 1. In Nereis, the gonads are developed in the posterior part of the body.
THE THE presence of chromatophores in certain annelids has …
WebThe annelid clade Sedentaria now includes which of the following? Select all that apply. -Leeches. -Earthworms. -Some polychaetes. In annelids, the segmentation of their bodies … WebThe clitellum is part of the reproductive system of clitellates, a subgroup of annelids which contains oligochaetes (earthworms) and hirudineans (leeches). The clitellum is a thick, saddle-like ring found in the epidermis (skin) of the worm, usually with a light-colored pigment. To form a cocoon for its eggs, the clitellum secretes a viscous ... bsn specialties
European Medicinal Leech: Features, Biology, and Medical Use
WebNereis dumerilii is carnivorous and devours small animals like crustacea and small molluscs. It seizes the food by means of jaws and teeth. The entire bucco-pharyngeal region during capture of prey is everted out. The eversion is caused by the pressure of coelomic fluid and contraction of protractor muscles. http://jupiter.plymouth.edu/~lts/invertebrates/primer/text/polychaeta.html Webreproductive patterns within the errantia vary between taxa. nereis and glycera, however, do show features common to many errantians. all of the following are common to reproduction by both nereis and glycera except one. ... leeches become_____ when searching for food. positively phototaxic. leeches belong to the annelid clade. exchange rate mas