Dorsiventral describing a structure that has distinct upper and lower surfaces . a dorsiventrally flattened structure has flat dorsal and ventral surfaces and very narrow lateral surfaces 异面(背腹型) :指上下表面结构具有明显差异。异面平滑结构指有平滑的背、腹面,以及非常狭窄的侧表面。
Like thallose liverworts , the hornworts have an alternation of generations in which the gametophyte is a dorsiventral flattened green phallus and the saprophyte is an upright structure that has a foot embedded in the gametophytes , from which it draws nutrition 与叶状体植物地钱一样,角苔具有明显的世代交替, ,配子体在世代交替中占优势,孢子体占劣势且利用其基足插入配子体的组织中吸取养料,以供孢子体生长。
A dorsiventral (Lat. dorsum, "the back", venter, "the belly") organ is one that has two surfaces differing from each other in appearance and structure, as an ordinary leaf.
dorsiventralとは意味:{名} : 背腹方向{はいふくほうこう} -------------------------------------------------------------------------------- {形} : 背部と腹部がはっきりしている、背腹性の dorsiventral meaning: adjective Possessing two sides distinguishable as upper or ventral and lower or dorsal (eg as a leaf)dorsiventral 뜻:배복성