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hydrotropism
hy·drot·ro·pism H0350600 (hī-drŏt′rə-pĭz′əm)n. Growth or movement in a sessile organism toward or away from water, as of the roots of a plant.
hy′dro·tro′pic (hī′drə-trō′pĭk) adj.hydrotropism (haɪˈdrɒtrəˌpɪzəm) n (Botany) the directional growth of plants in response to the stimulus of water hydrotropic adj ˌhydroˈtropically advhy·drot·ro·pism (hī-drŏt′rə-pĭz′əm) The growth or movement of a fixed organism, especially a plant, toward or away from water.
hydrotropic (hī′drə-trō′pĭk, hī′drə-trŏp′ĭk) adjectivehydrotropismgrowth or movement in response to water as a stimulus. — hydrotropic, adj.See also: WaterTranslationsHydrotropism
hydrotropism[hī′drä·trə‚piz·əm] (biology) Orientation involving growth or movement of a sessile organism or part, especially plant roots, in response to the presence of water. Hydrotropism the tendency of the growing organs of plants, particularly the roots, to grow away from a less moist environment toward a moister one. Where there is an uneven distribution of moisture in the soil, plant roots are directed to the moister areas because of hydrotropism. Hydrotropic sensitivity is concentrated in the very tip of the root. Sometimes negative hydrotropism is observed. For example the sporangiophores of many molds grow away from a moist substratum. hydrotropism
hydrotropism [hi-drot´ro-pizm] tropism in response to the presence of water or moisture.hy·dro·tro·pism , positive hydrotropismnegative hydrotropism (hī'drō-trō'pizm, hī-drot'rō-pizm), The property in growing organisms of turning toward a moist surface (positive hydrotropism) or away from a moist surface (negative hydrotropism). [hydro- + G. tropos, a turning] hydrotropism (hī-drŏt′rə-pĭz′əm)n. Growth or movement in a sessile organism toward or away from water, as of the roots of a plant.
hy′dro·tro′pic (hī′drə-trō′pĭk) adj.hy·dro·tro·pism (hī'drot'rŏ-pizm) The property in growing organisms of turning toward a moist surface (positive hydrotropism) or away from a moist surface (negative hydrotropism). [hydro- + G. tropos, a turning]hydrotropism the growth of plant roots in a particular orientation with respect to water, usually towards moisture. |