Webclitellum a specialized band of fused segments in some annelids, which aids in reproduction ctenidia specialized gills in mollusks Lophotrochozoa a clade of invertebrate organisms that is a sister group to the Ecdysozoa mantle a specialized epidermis that encloses all visceral organs and secretes shells in mollusks metamerism The 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 … See more The clitellum is a thickened glandular and non-segmented section of the body wall near the head in earthworms and leeches, that secretes a viscid sac in which eggs are stored. It is located near the anterior end of the body, … See more • Earthworm reproduction See more • Hess, Roberta T.; Vena, Joseph A. (January 1974). "Fine structure of the clitellum of the annelid Enchytraeus fragmentosus". Tissue and Cell. 6 (3): 503–514. doi:10.1016/0040-8166(74)90041-x. PMID 4279471. • Grove, A. J.; Cowley, L. F. … See more

What is That Bump or Band Around the Middle of Earthworms? It

Webplural clitella klī-ˈte-lə : a thickened glandular section of the body wall of some annelids that secretes a viscid sac in which the eggs are deposited Example Sentences Recent Examples on the Web The color and the clitellum, or the collar-like ring around the worm near their heads, have more distinctions between the two. WebSexually mature oligochaetes have a clitellum, which is a modification of a section of the body wall consisting of a glandular, saddlelike thickening near the gonopores. During copulation, the clitellum secretes a mucus that … the agency building

chp 12 metameric body form... Flashcards Quizlet

Webclitellum Select all features that are characteristic of the Echiurans. They are prevalent in freshwater habitats. They burrow in mud. They vary in length. They have a cylindrical body shape. They possess a retractable proboscis. They burrow in mud They vary in length They have a cylindrical body shape In oligochaetes, the setae ______. WebMost annelids possess structures called setae that function in ______. Multiple choice question. digestion and excretion. anchoring or locomotion. circulation and respiration. reproduction and development. anchoring or locomotion. Select all of the groups contained within Phylum Annelida. Multiple select question. WebDec 22, 2010 · It is considered invasive as it is widespread globally, tolerant to a range of transport and climatic conditions and, being a hermaphrodite, only two individuals are needed in a founding population. However, little is known about the properties which make this species so invasive. the agency burlington