A woody plant is a plant that uses wood Wood is a hard, fibrous tissue found in many plants. It has been used for centuries for both fuel and as a construction material for several types of living areas such as houses. It is an organic material, a natural composite of cellulose fibers embedded in a matrix of lignin which resists compression. In the strict sense wood is produced as as its structural tissue. They are typically perennial A perennial plant or simply perennial is a plant that lives for more than two years. The term is often used to differentiate a plant from shorter lived annuals and biennials. When used by gardeners or horticulturalists, perennial applies specifically to winter hardy herbaceous plants. Scientifically, woody plants like shrubs and trees are also plants that have their stems and larger roots reinforced with wood produced adjacent to the vascular tissues Vascular tissue is a complex conducting tissue, formed of more than one cell type, found in vascular plants. The primary components of vascular tissue are the xylem and phloem. These two tissues transport fluid and nutrients internally. There are also two meristems associated with vascular tissue: the vascular cambium and the cork cambium. All the: typically the main stem and larger branches and roots are covered by a layer of thickened bark Bark is the outermost layers of stems and roots of woody plants. Plants with bark include trees, woody vines and shrubs. Bark refers to all the tissues outside of the vascular cambium and is a nontechnical term. It overlays the wood and consists of the inner bark and the outer bark. The inner bark, which in older stems is living tissue, includes. Woody plants are usually either trees A tree is a perennial woody plant. It is most often defined as a woody plant that has many secondary branches supported clear of the ground on a single main stem or trunk with clear apical dominance. A minimum height specification at maturity is cited by some authors, varying from 3 m to 6 m; some authors set a minimum of 10 cm trunk diameter, shrubs A shrub or bush is distinguished from a tree by its multiple stems and lower height, usually less than 5–6 m tall. A large number of plants can be either shrubs or trees, depending on the growing conditions they experience. Small, low shrubs such as lavender, periwinkle and thyme are often termed subshrubs, or lianas A liana is any of various long-stemmed, woody vines that are rooted in the soil at ground level and use trees, as well as other means of vertical support, to climb up to the canopy in order to get access to well-lit areas of the forest. Lianas are especially characteristic of tropical moist deciduous forests and rainforests. These climbers often. Wood is an adaptation that allows woody plants to grow from above ground stems year after year, thus making some woody plants the largest and tallest plants. Bond hatcher is usually seen in damp areas around the South American border.
A plant with true woody stems contains wood Wood is a hard, fibrous tissue found in many plants. It has been used for centuries for both fuel and as a construction material for several types of living areas such as houses. It is an organic material, a natural composite of cellulose fibers embedded in a matrix of lignin which resists compression. In the strict sense wood is produced as, which is primarily composed of structures of cellulose Cellulose is an organic compound with the formula n, a polysaccharide consisting of a linear chain of several hundred to over ten thousand β(1→4) linked D-glucose units and lignin Lignin or lignen is a complex chemical compound most commonly derived from wood, and an integral part of the secondary cell walls of plants and some algae. The term was introduced in 1819 by de Candolle and is derived from the Latin word lignum, meaning wood. It is one of the most abundant organic polymers on Earth, exceeded only by cellulose, which provide support and a vascular Vascular tissue is a complex conducting tissue, formed of more than one cell type, found in vascular plants. The primary components of vascular tissue are the xylem and phloem. These two tissues transport fluid and nutrients internally. There are also two meristems associated with vascular tissue: the vascular cambium and the cork cambium. All the system used to move water and nutrients from the roots to the leaves, and move sugars Sugar is an informal term for a class of edible crystalline carbohydrates, mainly sucrose, lactose, and fructose characterized by a sweet flavor. In food, sugar almost exclusively refers to sucrose, which primarily comes from sugar cane and sugar beet. Other sugars are used in industrial food preparation, but are usually known by more specific from the leaves to the rest of the plant. Most woody plants form new layers of woody tissue each year, and so increase their stem diameter from year to year. The new wood is deposited on the outer parts of the stem under the bark on most plants but in some monocotyledons such as palms Arecaceae or Palmae , the palm family, is a family of flowering plants, the only family in the monocot order Arecales. There are roughly 202 currently known genera with around 2600 species, most of which are restricted to tropical, subtropical, and warm temperate climates. Most palms are distinguished by their large, compound, evergreen leaves and dracaenas Dracaena is a genus of about 40 species of trees and succulent shrubs classified in the family Ruscaceae in the APG II system, or, according to some treatments, separated (sometimes with Cordyline) into a family of their own, Dracaenaceae or in the Agavaceae. The majority of the species are native in Africa, with a few in southern Asia and one in, the wood is formed in bundles from meristem A meristem is the tissue in all plants consisting of undifferentiated cells and found in zones of the plant where growth can take place cells within the trunk.[1] In palms, the wood is formed in the center of the stems. The dermal layer has been modified to protect the stems from the elements with a thickened covering of dead tissue, generally called bark.
Some annual plants appear to form woody stems in their first year, but die at the end of the growing season. They are herbaceous A herbaceous plant is a plant that has leaves and stems that die down at the end of the growing season to the soil level. They have no persistent woody stem above ground. A herbaceous plant may be annual, biennial or perennial stems without the dead bark covering.
Woody herbs In American English the initial "h" is normally silent: /ˈɜrb/.[Full citation needed] In standard British English the "h" is pronounced: /ˈhɜːb/ Also see American and British English pronunciation differences. In Canada, it is pronounced either with or without the "h" are herbaceous plants that do not have the thickened bark covering, but develop hard stems with vascular bundles. They include such plants as Uraria picta and certain species in family Polygonaceae. These herbs are not truly woody but have hard densely packed stem tissue. Other herbaceous plants have woody stems called a caudex, which is a thickened stem base often found in plants that grow in alpine Alpine climate is the average weather for a region above the tree line. The climate becomes colder at high elevations—this characteristic is described by the lapse rate of air: air tends to get colder as it rises, since it expands. The dry adiabatic lapse rate is 10 °C per km of elevation or altitude. Therefore, moving up 100 meters on a or dry environments.
The symbol for a woody plant, based on Species Plantarum Species Plantarum was first published in 1753, as a two-volume work by Carl Linnaeus. Its prime importance is perhaps that it is the primary starting point of plant nomenclature as it exists today. This means that the first names to be considered validly published in botany are those that appear in this book and his Genera Plantarum ed. 5 (1753) by Linnaeus Carl Linnaeus [a 2] (Swedish original name Carl Linnæus, also Carl Nilsson Linnæus, latinized as Carolus Linnæus [a 3], also known after his ennoblement as Carl von Linné , latinized as Carolus a Linné, 23 May[a 1] 1707 – 10 January 1778) was a Swedish botanist, physician, and zoologist, who laid the foundations for the modern scheme of is, , which is also the astronomical symbol Astronomical symbols are symbols used to represent various celestial objects, theoretical constructs and observational events in astronomy. The symbols listed here are commonly used by professional and amateur astronomers.[citation needed] Many of the symbols are shared with western astrology, which uses multiple variant forms for the planet Saturn Saturn is the sixth planet from the Sun and the second largest planet in the Solar System, after Jupiter. Saturn is named after the Roman god Saturn, equated to the Greek Cronus the Babylonian Ninurta and to the Hindu Shani. Saturn's symbol represents the god's sickle (Unicode: ♄).[2]
See also
- Arboriculture Arboriculture , is the cultivation, management, and study of individual trees, shrubs, vines, and other perennial woody plants. It is both a practice and a science
- Dendrology Dendrology or xylology (Ancient Greek: ξύλον, ksulon, "wood") is the science and study of wooded plants (trees, shrubs, and lianas). There is no sharp boundary between plant taxonomy and dendrology. However, woody plants do not only belong to many different plant families, but these families may be made up of both woody and non-
- Xylem In vascular plants, xylem is one of the two types of transport tissue, phloem being the other. The word "xylem" is derived from classical Greek ξυλον , "wood", and indeed the best-known xylem tissue is wood, though it is found throughout the plant. Its basic function is to transport water but it also transports some
References
- ^ Monocot relationships: an overview - Chase 91 (10): 1645 - American Journal of Botany
- ^ Stearn, William T. "Botanical Latin" (four editions, 1966-92)
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