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Stele

Biology Start codonStem

stele
central cylinder of united vascular bundles in the roots and stems of dicotyledonous seed plants
Source: Noland, George B. 1983. General Biology, 11th Edition. St. Louis, MO. C. V. Mosby ...
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stele
The central vascular cylinder in roots where xylem and phloem are located.
stem ...

stele (Gr. stele, a post) The central cylinder, inside the cortex, of roots and stems of vascular plants. See meristele.

stele The central vascular cylinder of roots and stems of vascular plants.
stenohaline Pertaining to aquatic organisms that have restricted tolerance to changes in environmental saltwater concentration.
stenophagous Eating few kinds of foods.

See also: Stele (biology)
Stem usually consist of three tissues, dermal tissue, ground tissue and vascular tissue. The dermal tissue covers the outer surface of the stem and usually functions to waterproof, protect and control gas exchange.

Once within the stele, water is free again to move between cells as well as through them. In young roots, water enters directly into the xylem. In older roots, it may have to pass first through a band of phloem and cambium.

circle of plant tissue of stems and roots between the cortex and stele
Source: Noland, George B. 1983. General Biology, 11th Edition. St. Louis, MO. C. V. Mosby
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1. The slender, smooth stem of an arrow; hence, an arrow. His sleep, his meat, his drink, is him bereft, That lean he wax, and dry as is a shaft. (Chaucer) A shaft hath three principal parts, the stele [stale], the feathers, and the head. (Ascham) ...

See also: Plant, Trans, Organ, Cells, Species