Updated About encyclopedia.com content Print Article
perennation The survival of biennial or perennial plants from one year to the next by vegetative means. In biennials and herbaceous perennials the aerial parts of the plant die down and the plants survive by means of underground storage roots (e.g. carrot), rhizomes (e.g. couch grass, Solomon's seal), tubers (e.g. dahlia), bulbs (e.g. daffodil, snowdrop), or corms (e.g. crocus, gladiolus). These perennating organs are also frequently responsible for vegetative propagation. Woody perennials survive the winter by reducing their metabolic activity (e.g. by leaf loss in deciduous trees and shrubs).
More From encyclopedia.com
Ornithopoda , Ornithopoda (subclass Archosauria, order Ornithischia) A suborder of dinosaurs which had an essentially bipedal gait. The suborder includes several f… Dicotyledoneae , Dicotyledoneae One of the two classes of flowering plants (see Anthophyta), distinguished by having two seed leaves (cotyledons) within the seed. The… Hemicryptophyte , hemicryptophyte One of Raunkiaer's life-form categories, being a plant whose perennating buds are at ground level, the aerial shoots dying down at th… Vegetative Propagation , vegetative propagation (vegetative reproduction) 1. A form of asexual reproduction in plants whereby new individuals develop from specialized multice… -ism , -ISM -ISM. A noun-forming SUFFIX, three of whose uses relate to language: (1) Forming words for concepts, activities, and conditions: agrammatism, bi… Alarm Response , alarm response An immediate response to any stimulus that potentially threatens the wellbeing of an organism. It involves the release of adrenaline a…
You Might Also Like