Bryophyta (bryophytes) A division of plants which for most authors includes the mosses and liverworts. Although bryophytes lack differentiated water-conducting vessels and rely largely or …

2018年5月17日 · Traditionally, the division Bryophyta has included the true mosses, liverworts, and hornworts. However, some scientists consider each of these groups sufficiently distinct to …

2018年5月9日 · Musci (mosses; division Bryophyta) A class of plants all of which have a gametophyte that is differentiated into stem and leaves. The leaves are generally only 1 cell …

2018年5月21日 · It gives rise to leafless stalks bearing capsules (sporophytes). Spores formed in the capsules are released and grow to produce new plants. Liverworts were formerly placed in …

Psilotophyta (sīlō´tŏf´ətə), division of vascular plants consisting of only two genera, Psilotum and Tmesipteris, with very few species.

2018年5月18日 · Evolution of Plants Modern classification systems, based largely on molecular evidence, divide living organisms into three domains: Bacteria (also called Eubacteria), …