HHS Vulnerability Disclosure, Help In other species, including nearly all those of the north temperate zone, the gametophyte is subterranean, slower growing, and dependent upon an associated fungus for continued growth. Numerous microspores are produced in the microsporangium, and cell division within the microspore wall initiates male gametophyte development. families Bookshelf Today, seedless vascular plants are represented by monilophytes and lycophytes. Cytologia 44:651659, Tan MK, Thompson JA (1990) Variation in genome size in Pteridium. These subclasses correspond to Smith's four classes, with Ophioglossidae corresponding to Psilotopsida. volume19,pages 763775 (2011)Cite this article. You C, Cui J, Wang H, Qi X, Kuo LY, Ma H, Gao L, Mo B, Chen X. Genome Biol. [3], Furthermore, within the Polypodiopsida, the largest grouping, a number of informal clades were recognised, including leptosporangiates, core leptosporangiates, polypods (Polypodiales), and eupolypods (including Eupolypods I and Eupolypods II). Development. lycophyte, (class Lycopodiopsida), class of spore-bearing vascular plants comprising more than 1,200 extant species. The big difference between monilophytes and lycophytes In the monilophyte life The big difference between monilophytes and School University of Florida Course Title BSC 2011 Type Test Prep Uploaded By Biaria Pages 9 Ratings 100% (2) This preview shows page 7 - 9 out of 9 pages. The needle-shaped leaves do not contribute greatly to photosynthesis, the majority of which takes place in the green stem. Lycophytes include club mosses, spikemosses, and quillwortsnone of which are true mosses. grow on top of one another to compete for light. Lycophytes reproduce by spores and have alternation of generations in which (like other vascular plants) the sporophyte generation is dominant. Fill the form to request your free trial. Course Hero is not sponsored or endorsed by any college or university. [16][17] The genus Renalia illustrates the problems in classifying early land plants. The lycophytes, when broadly circumscribed, are a group of vascular plants that include the clubmosses. Legal. Ferns and Lycophytes | Basic Biology Can J Bot 60:13601370, Kurth E (1982) Mitotic activity in the root apex of the water fern Marsilea vestita Hook. 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