In vascular plants Vascular plants are those plants that have lignified tissues for conducting water, minerals, and photosynthetic products through the plant. Vascular plants include the ferns, clubmosses, flowering plants, conifers and other gymnosperms. Scientific names for the group include Tracheophyta and Tracheobionta, but neither name is very widely used.[, the root is the organ of a plant In biology and anatomy, an organ is a tissue that performs a specific function or group of functions within an organism that typically lies below the surface of the soil. This is not always the case, however, since a root can also be aerial Aerial roots are roots above the ground. They are almost always adventitious. They are found in diverse plant species, including epiphytes such as orchids, tropical coastal swamp trees such as mangroves, the resourceful banyan trees, the warm-temperate rainforest rātā and pōhutukawa (M. excelsa) trees of New Zealand and vines like Common Ivy ( (growing above the ground) or aerating (growing up above the ground or especially above water). Furthermore, a stem normally occurring below ground is not exceptional either (see rhizome In botany, a rhizome is a characteristically horizontal stem of a plant that is usually found underground, often sending out roots and shoots from its nodes. Rhizomes may also be referred to as creeping rootstalks, or rootstocks). So, it is better to define root as a part of a plant body that bears no leaves, and therefore also lacks nodes A stem is one of two main structural axes of a vascular plant. The stem is normally divided into nodes and internodes, the nodes hold buds which grow into one or more leaves, inflorescence , cones or other stems etc. The internodes act as spaces that distance one node from another. The term shoots is often confused with stems; shoots generally. There are also important internal structural differences between stems and roots. The first root that comes from a plant Plants are living organisms belonging to the kingdom Plantae. They include familiar organisms such as trees, herbs, bushes, grasses, vines, ferns, mosses, and green algae. About 350,000 species of plants, defined as seed plants, bryophytes, ferns and fern allies, are estimated to exist currently. As of 2004, some 287,655 species had been is called the radicle In botany, the radicle is the first part of a seedling to emerge from the seed during the process of germination. The radicle is the embryonic root of the plant, and grows downward in the soil(The shoot emerges from the plumule). Above the radicle is the embryonic stem or hypocotyl, supporting the cotyledon(s). The two major functions of roots are 1) absorption of water and inorganic nutrients and 2) anchoring of the plant body to the ground. In response to the concentration of nutrients, roots also synthesise cytokinin, which acts as a signal as to how fast the shoots can grow. Roots often function in storage of food and nutrients. The roots of most vascular plant species enter into symbiosis with certain fungi A fungus is any member of a large group of organisms that includes microorganisms such as yeasts and molds, and the macroscopic mushrooms. Once considered to be plants, the Fungi (pronounced /ˈfʌndʒaɪ/ or /ˈfʌŋɡaɪ/) are now classified by modern biologists as a kingdom that is separate from those of plants and animals. Fungal cells have to form mycorrhizas A mycorrhiza is a symbiotic (occasionally weakly pathogenic) association between a fungus and the roots of a plant. In a mycorrhizal association, the fungus may colonize the roots of a host plant, either intracellularly or extracellularly. They are an important part of soil life, and a large range of other organisms including bacteria The bacteria [bækˈtɪərɪə] (singular: bacterium)[α] are a large group of unicellular microorganisms. Typically a few micrometres in length, bacteria have a wide range of shapes, ranging from spheres to rods and spirals. Bacteria are ubiquitous in every habitat on Earth, growing in soil, acidic hot springs, radioactive waste, water, and deep also closely associate with roots.

Contents

Show All>>

 

The above information uses material from Wikipedia and is licensed under the GNU Free Documentation License The purpose of this License is to make a manual, textbook, or other functional and useful document "free" in the sense of freedom: to assure everyone the effective freedom to copy and redistribute it, with or without modifying it, either commercially or noncommercially. Secondarily, this License preserves for the author and publisher a.
Some facts may not have been fully verified for accuracy. [Disclaimers Wikipedia is an online open-content collaborative encyclopedia, that is, a voluntary association of individuals and groups working to develop a common resource of human knowledge. The structure of the project allows anyone with an Internet connection to alter its content. Please be advised that nothing found here has necessarily been reviewed by]
This page was last archived by our server on Tue Aug 4 15:06:05 2009. [ refresh local cache ]
Displaying this page or its contents does not use any Wikimedia Foundation's resources.
The owners of this site proudly support the Wikimedia Foundation.


Royce Gracie wants to take UFC back to its roots - Los Angeles Times
news.google.com
Royce Gracie wants to take UFC back to its roots

Los Angeles Times

Rua first practiced at a Gracie academy in Brazil, and calls Royce and his family "the root of the sport." Gracie oversees about 50 Gracie academies ...



and more »
Google News Search: Root,
Tue Jul 21 18:31:56 2009