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dorsiventral adj.= dorsoventral.

dorsoventral

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 與葉狀體植物地錢一樣,角苔具有明顯的世代交替, ,配子體在世代交替中占優勢,孢子體占劣勢且利用其基足插入配子體的組織中吸取養料,以供孢子體生長。