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Bryophyta    
苔癣植物门; 苔藓植物门

苔癣植物门; 苔藓植物门

Bryophyta
n 1: a division of nonflowering plants characterized by rhizoids
rather than true roots and having little or no organized
vascular tissue and showing alternation of generations
between gamete-bearing forms and spore-bearing forms;
comprises true mosses (Bryopsida) and liverworts
(Hepaticopsida) and hornworts (Anthoceropsida) [synonym:
{Bryophyta}, {division Bryophyta}]

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  • Bryophyte - Encyclopedia. com
    Bryophyte Classification, characteristics, and habitats of bryophytes Hepatophyta (division liverworts) Hornworts (division Anthocerophyta) Mosses (division Bryophyta) Importance of mosses Resources Bryophytes include the mosses, liverworts, and hornworts Bryophytes are the simplest of plants (excluding the algae, which are not considered plants by most botanists) Bryophytes are small
  • Bryophyta - Encyclopedia. com
    Bryophyta (bryophytes) A division of plants which for some authors includes the mosses (Musci) and liverworts (Hepaticae), but is now often taken to include only the mosses; liverworts having been assigned divisional status as Hepatophyta Bryophytes differ from algae in that the multicellular gametangium is surrounded by a protective jacket of sterile cells; gametangia of algae are usually
  • Moss - Encyclopedia. com
    Moss The mosses are the largest of the three classes in the plant phylum Bryophyta They have been divided into three subclasses: the true mosses (Bryideae), the peat mosses (Sphagnideae), and the granite mosses (Andreaeideae) The familiar small, green, and "leafy" moss plant is known as the gametophyte This haploid multicellular phase is dominant in the moss life cycle The mosses are the
  • Evolution of Plants - Encyclopedia. com
    Evolution of Plants Plants, descended from aquatic green algal ancestors, first appeared on land more than 450 million years ago during or prior to the Ordovician period This event preceded the colonization of land by four-footed animals (tetrapods), which occurred considerably later in the Devonian period (408 to 360 million years ago) Understanding the origin of plants is important because
  • paraphysis | Encyclopedia. com
    paraphysis A sterile hair found among the reproductive structures of many Fungi, Bryophyta, and algae Source for information on paraphysis: A Dictionary of Plant Sciences dictionary
  • Musci | Encyclopedia. com
    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 thick (except at the midrib); they are never stalked The leaves may be finely toothed or entire; they come in a variety of shapes but are never deeply lobed, differing in this respect from some leafy liverworts Most mosses are
  • Lycopodiophyta - Encyclopedia. com
    Lycopodiophyta (lī´kōpō´dēŏf´ətə), division of the plant kingdom consisting of the organisms commonly called club mosses and quillworts As in other vascular plants, the sporophyte, or spore-producing phase, is the conspicuous generation, and the gametophyte, or gamete-producing phase, is minute Source for information on Lycopodiophyta: The Columbia Encyclopedia, 6th ed dictionary
  • Hepatica | Encyclopedia. com
    Liverworts occur in moist situations (including fresh water) and as epiphytes on other plants Like the mosses (see Bryophyta), liverworts show marked alternation of generations between haploid gamete-bearing forms (gametophytes) and diploid spore-bearing forms (sporophytes), the latter being dependent on the former for nutrients, etc
  • perichaetium | Encyclopedia. com
    perichaetium In Bryophyta, 1 of the enlarged leaves or bracts that surround the archegonia and antheridia, or the structure the perichaetia form Source for information on perichaetium: A Dictionary of Plant Sciences dictionary
  • Ehud Barak - Encyclopedia. com
    Ehud Barak On April 1, 1991, Ehud Barak (born 1942) was elevated to the rank of lieutenant general, becoming Israel's 14th chief of staff, and, at the age of 49, also the youngest in the history of the Israel Defense Forces (I D F ) In 1995, following the assassination of Yitzhak Rabin, Ehud Barak was named Israel's Foreign Minister He became the leader of Israel's Labor Party in 1997 A





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