adj.[生物]趨化現(xiàn)象的；趨藥性的
The spermatozoids of primitive plants are often positively chemotactic, swimming toward the female organs in response to a chemical secreted by the latter. 較原始的植物的游動(dòng)精子有正向的趨化現(xiàn)象，總是游向由雌性器官所分泌的物質(zhì)。
