| Revision as of 05:24, 8 July 2003 view sourceMolinari (talk | contribs)Extended confirmed users1,011 editsmNo edit summary← Previous edit | Revision as of 20:21, 13 September 2003 view source Imc (talk | contribs)Autopatrolled, Extended confirmed users, Pending changes reviewers9,142 edits Expanded explanation of wood producing plants.Next edit → | ||
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| '''Wood''' is the primary content of the stems of 'woody plants', especially trees, but also all shrubs. These perennial plants are characterised by stems that grow outward year after year. These stems form ] and ] based tissue. Plants that do not produce wood are called 'herbaceous'; this group of plants includes all annual plants, many perennial plants, and most submerged and floating aquatic plants. | |||
| <b>Wood</b> is the primary content of ]s and other ]. Everything in a plant, apart from the ], ] and ] is wood. In other words, wood is the inside of the plant's stem. | |||
| The woody tissue is formed by the plant for structural purposes, and because it is an effective and efficient structural material, it is useful to humans. | |||
| Wood is made of ] fibers, held together with ] |
Wood is made of ] fibers, held together with ]. | ||
| When cut down and dried, wood is used for many different, useful purposes. Processed wood turns into paper. Artists shape and join pieces of wood with special tools, which is called ]. Wood has been an important construction material since humans began building shelters, and remains in plentiful use today. | When cut down and dried, wood is used for many different, useful purposes. Processed wood turns into paper. Artists shape and join pieces of wood with special tools, which is called ]. Wood has been an important construction material since humans began building shelters, and remains in plentiful use today. | ||
Revision as of 20:21, 13 September 2003
Wood is the primary content of the stems of 'woody plants', especially trees, but also all shrubs. These perennial plants are characterised by stems that grow outward year after year. These stems form cellulose and lignin based tissue. Plants that do not produce wood are called 'herbaceous'; this group of plants includes all annual plants, many perennial plants, and most submerged and floating aquatic plants.
The woody tissue is formed by the plant for structural purposes, and because it is an effective and efficient structural material, it is useful to humans. Wood is made of cellulose fibers, held together with lignin.
When cut down and dried, wood is used for many different, useful purposes. Processed wood turns into paper. Artists shape and join pieces of wood with special tools, which is called woodworking. Wood has been an important construction material since humans began building shelters, and remains in plentiful use today.
In modern times, many of the traditional uses of wood have been taken over by metal and plastics.
Wood is commonly classified as either hardwood or softwood. The wood from conifers (e.g., pine) is called softwood, and the wood from broad- leaved trees (e.g., oak) is called hardwood. This classification is sometimes misleading, as some hardwoods (e.g., balsa) are actually softer than most softwoods.
Additionally, woods from different types of trees have different colors and grain densities. Because of these differences, and the fact that some woods take longer to grow than others, wood from different kinds of trees have different qualities and values. For example, while mahogany is a dark, dense hardwood which is excellent for fine furniture crafting, balsa is light, soft, and almost spongelike, making it useful for model vehicle and structure crafting.
See also: tree, paper, Chinese five elements, botanical names of wood