clitellum 的定义
plural cli·tel·la [klahy-tel-uh]. /klaɪˈtɛl ə/.
- a ring or saddle-shaped region of glandular tissue in the body wall of certain annelids, as earthworms and some leeches, that after copulation secretes a cocoon in which the eggs and sperm are deposited for fertilization and development.
更多clitellum例句
- Clitellum always present, extending over two (many limicolous forms) to forty-five segments (Alma).
- Clitellum generally only two or three segments and more anterior in position than in Terricolae.
- Clitellum commonly extensive and more posterior in position than in other groups.
- Clitellum, kli-tel′um, n. the saddle of an annelid, as the earthworm:—pl.
- Clitellum not present as a definite organ, as in Oligochaeta.