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The embryophytes ( / ˈɛmbriəˌfaɪts /) are a clade of plants, also known as Embryophyta ( / ˌɛmbriˈɒfətə, - oʊˈfaɪtə /) or land plants. They are the most familiar group of photoautotrophs that make up the vegetation on Earth 's dry lands and wetlands.
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What is Embryophyta a vascular plant?
Are embryophytes vascular or bryophyte?
What is a Embryophyta?
The classification “embryophytes” refers to the evolution of the embryo, a zygote that is retained and nourished by the female gametophyte as it grows. Embryophytes share many common features, most corresponding to the selective pressures from the initial movement onto land.
Vascular plants have specialized tissues for conducting water, with water transport occurring either in xylem or phloem. The xylem carries water and inorganic solutes upward toward the leaves from the roots, while phloem carries organic solutes throughout the plant.
The embryo is defined as an immature sporophyte that is attached to or surrounded by the gametophyte. In many land plants, such as the seed plants, the embryo will remain dormant for a period of time and will begin growth only after the proper environmental conditions are met.
19.2: Introduction to the Evolution of the Embryophyta. There are four major evolutionary groups of land plants: Bryophytes, Seedless Vascular Plants (SVPs), Gymnosperms, and Angiosperms.
Bryophytes consist of three basal land plant lineages (mosses, liverworts and hornworts) and are the ancestors of vascular plants now dominating the terrestrial environment. Following current taxonomy, vascular plants are divided into lycophytes and euphyllophytes.
Oct 29, 2010 · Cooksonia is considered as the earliest “true” vascular plant (eutracheophyte; Kenrick & Crane, 1997b). Its vascular status has been demonstrated from Early Devonian (Lochkovian, ≈415 Ma) specimens (Edwards et al., 1992), but the plant first evolved during the second half of the Silurian (≈430–416 Ma; Edwards & Feehan, 1980).
