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In zoology (particularly in ethology), habit usually refers to the ''behaviour'' of animals, instinctive or otherwise, though it also has broader application. In botany habit is the form in which a given species of plant grows.〔Jackson, Benjamin, Daydon; A Glossary of Botanic Terms with their Derivation and Accent; Published by Gerald Duckworth & Co. London, 4th ed 1928〕 == Behavior == In zoology, ''habit'' usually refers to a specific behavior pattern, either adopted, learned, pathological, innate, or directly related to physiology. For example: * ...the () was in the ''habit'' of springing upon the (knocker ) in order to gain admission... * If these sensitive parrots are kept in cages, they quickly take up the ''habit'' of feather plucking. * The spider monkey has an arboreal ''habit'' and rarely ventures onto the forest floor. * The brittlestar has the ''habit'' of breaking off arms as a means of defense. ''Mode of life'' (or ''lifestyle'', ''modus vivendi'') is a concept related to ''habit'', and it sometimes is referred to as the ''habit'' of an animal. It may refer to the locomotor capabilities, as in "(motile ''habit''", sessile, errant, sedentary), feeding behaviour and mechanisms, nutrition mode (free-living, parasitic, holozoic, saprotrophic, trophic type), type of habitat (terrestrial, arboreal, aquatic, marine, freshwater, seawater, benthic, pelagic, nektonic, planktonic, etc.), period of activity (diurnal, nocturnal), types of ecological interaction, etc. The habits of plants and animals often change in response to changes in their environment. For example: if a species develops a disease or there is a drastic change of habitat or local climate, or it is removed to a different region, then the normal habits may change. Such changes may be either pathological, or adaptive. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Habit (biology)」の詳細全文を読む スポンサード リンク
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