Plants, also called green plants (Viridiplantae in Latin), are living organisms of the kingdom Plantae including such multicellular groups as flowering plants, conifers, ferns and mosses, as well as, depending on definition, the green algae, but not red or brown seaweeds like kelp, nor fungi or bacteria.
Green plants have cell walls with cellulose and characteristically obtain most of their energy from sunlight via photosynthesis using chlorophyll contained in chloroplasts, which gives them their green color. Some plants are parasitic and may not produce normal amounts of chlorophyll or photosynthesize. Plants are also characterized by sexual reproduction, modular and indeterminate growth, and an alteration of generations, although asexual reproduction is common, and some plants bloom only once while others bear only one bloom.
Precise numbers are difficult to determine, but as of 2010, there are thought to be 300–315 thousand species of plants, of which the great majority, some 260–290 thousand, are seed plants (see the table below). Green plants provide most of the world's free oxygen and are the basis of most of the earth's ecologies, especially on land. Plants described as grains, fruits and vegetables form mankind's basic foodstuffs, and have been domesticated for millennia. Plants enrich our lives as flowers and ornaments. Until recently and in great variety they have served as the source of most of our medicines and drugs. Their scientific study is known as botany.
Other articles related to "plants, plant":
... a number of foreign companies opening assembly plants in the area. 2007, Volkswagen Group opened a new assembly plant in Kaluga, with further expansion plans planned to be completed by, or during, 2009 ... The plant currently assembles the Volkswagen Passat and Škoda Octavia ...
... Rhus toxicodendron and Rhus radicans), is a poisonous North American plant that is well known for its production of urushiol, a clear liquid compound ... The plant is not a true ivy (Hedera) ...
... The Qinshan Nuclear Power Plant is a multi-unit nuclear plant under construction in Qinshan Town, Haiyan County, Zhejiang, the People's Republic of China ... the majority of the units are mid-size, it may be surpassed by other plants in terms of generating capacity ... but was the first domestically designed and constructed nuclear power plant in the nation (95 percent of components came from domestic manufactures) ...
... from vegetus (active), in reference to the process of a plant growing ... in the 15th century, and originally applied to any plant ... In 1967, the meaning of the term "vegetable" was specified to mean "plant cultivated for food, edible herb or root." The year 1955 noted the first use of the shortened, slang term "veggie" ...
... From 1974 to 1985 he worked in Hyderabad in India as Principal Plant Physiologist at the International Crops Research Institute for the Semi-Arid Tropics ... As a biochemist, Sheldrake researched the role of auxin, a plant hormone, in the cellular differentiation of a plant's vascular system ... the genome of a fertilised egg of an animal or plant, we will be able to predict in at least one case all the details of the organism that develops from it, including any abnormalities." Sheldrake denies ...
Famous quotes containing the word plant:
“Here come the line-gang pioneering by.
They throw a forest down less cut than broken.
They plant dead trees for living, and the dead
They string together with a living thread.”
—Robert Frost (18741963)
“The mode of clearing and planting is to fell the trees, and burn once what will burn, then cut them up into suitable lengths, roll into heaps, and burn again; then, with a hoe, plant potatoes where you can come at the ground between the stumps and charred logs; for a first crop the ashes suffice for manure, and no hoeing being necessary the first year. In the fall, cut, roll, and burn again, and so on, till the land is cleared; and soon it is ready for grain, and to be laid down.”
—Henry David Thoreau (18171862)
“The average parent may, for example, plant an artist or fertilize a ballet dancer and end up with a certified public accountant. We cannot train children along chicken wire to make them grow in the right direction. Tying them to stakes is frowned upon, even in Massachusetts.”
—Ellen Goodman (b. 1941)