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Ratcliffe, Sir Peter John

(Encyclopedia)Ratcliffe, Sir Peter John, 1954–, British cellular and molecular biologist, M.D., Cambridge, 1987. He has been a researcher at Oxford since 1987. Ratcliffe, along with William Kaelin and Gregg Semen...

bog

(Encyclopedia)bog, very old lake without inlet or outlet that becomes acid and is gradually overgrown with a characteristic vegetation (see swamp). Peat moss, or sphagnum, grows around the edge of the open water of...

sap

(Encyclopedia)sap, fluid in plants consisting of water and dissolved substances. Cell sap refers to this fluid present in the large vacuole, or cell cavity, that occupies most of the central portion of mature plant...

fertilization

(Encyclopedia)CE5 Fertilization of an egg cell fertilization, in biology, process in the reproduction of both plants and animals, involving the union of two unlike sex cells (gametes), the sperm and the ovum, f...

legume

(Encyclopedia)legume lĕˈgyo͞om, lĭgyo͞omˈ [key], common name for any plant of the family Leguminosae, which is called also the pulse, legume, pea, or bean family. The word is often used loosely in the plural ...

elecampane

(Encyclopedia)elecampane ĕlˌəkămpānˈ [key], hardy Old World herb, Inula helenium, of the family Asteraceae (aster family), naturalized in America and sometimes cultivated in gardens. It has showy yellow-rayed...

bromeliad

(Encyclopedia)bromeliad, common name for plants of the family Bromeliaceae (pineapple family). ...

seed

(Encyclopedia)seed, fertilized and ripened ovule, consisting of the plant embryo, varying amounts of stored food material, and a protective outer seed coat. Seeds are frequently confused with the fruit enclosing th...

ground pine

(Encyclopedia)ground pine, common name for several creeping plants, particularly species of club moss. ...

Morton Grove

(Encyclopedia)Morton Grove, village (1990 pop. 22,408), Cook co., N of Chicago, NE Ill.; inc. 1895. It has research laboratories and plants that manufacture goods such as pumps, electrical equipment, and cosmetics....