Root hair


Root hair

A root hair is a tubular outgrowth of root epidermal cells of vascular plants. They are found only in the region of maturation of the root. Root hairs are a specialized form of rhizoid.

Root hairs form an important surface over which plants absorb most of their water and nutrients. They are also directly involved in the formation of root nodules in legume plants.

They have a large surface area, relative to the other cells, that help them absorb more water and minerals.


Wikimedia Foundation. 2010.

Look at other dictionaries:

  • Root hair — Root Root, n. [Icel. r[=o]t (for vr[=o]t); akin to E. wort, and perhaps to root to turn up the earth. See {Wort}.] 1. (Bot.) (a) The underground portion of a plant, whether a true root or a tuber, a bulb or rootstock, as in the potato, the onion …   The Collaborative International Dictionary of English

  • root hair — root′ hair n. bot an elongated tubular extension of an epidermal cell of a root, serving to absorb water and minerals from the soil • Etymology: 1855–60 …   From formal English to slang

  • root hair — n. Bot. any of the thin walled, hairlike tubular outgrowths from a growing root, which serve to absorb water and minerals from the soil …   English World dictionary

  • root hair — noun thin hairlike outgrowth of an epidermal cell just behind the tip; absorbs nutrients from the soil • Hypernyms: ↑plant organ • Part Holonyms: ↑root * * * noun : one of the many hairlike tubular outgrowths of epidermal or sometimes cortical… …   Useful english dictionary

  • root hair — rizoidai statusas T sritis ekologija ir aplinkotyra apibrėžtis Samanų, kerpių, dumblių, grybų panašios į šaknis išaugos, kuriomis šie augalai prisitvirtina prie substrato, pasisavina iš jo vandenį ir mineralines medžiagas. atitikmenys: angl.… …   Ekologijos terminų aiškinamasis žodynas

  • root hair — /ˈrut hɛə/ (say rooht hair) noun an elongated tubular extension of an epidermal cell of the root serving to absorb water and minerals from the soil …   Australian English dictionary

  • root hair — an elongated tubular extension of an epidermal cell of a root, serving to absorb water and minerals from the soil. [1855 60] * * * …   Universalium

  • root hair — noun Date: 1853 a filamentous extension of an epidermal cell near the tip of a rootlet that functions in absorption of water and minerals …   New Collegiate Dictionary

  • root hair cell — Root epidermal cell, part of which projects from the root surface as a thin tube, thus increasing the root surface area and promoting absorption of water and ions …   Dictionary of molecular biology

  • Root hairs — Root hair cells, the rhizoids of many vascular plants, are tubular outgrowths of trichoblasts, the hair forming cells on the epidermis of a plant root. That is, root hair cells are lateral extensions of a single cell and only rarely branched.… …   Wikipedia


We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.