geotropism

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geotropism

 [je-ot´ro-pizm]
tropism in response to gravity, i.e., either toward or away from the earth; growth influenced by gravity.

ge·o·tax·is

(jē'ō-tak'sis),
A form of positive barotaxis in which there is a tendency to growth or movement toward or into the earth.
Synonym(s): geotropism
[geo- + G. taxis, orderly arrangement]

geotropism

/ge·ot·ro·pism/ (je-ah´trah-pizm) a tendency of growth or movement toward or away from the earth; the influence of gravity on growth.

geotropism

(jē-ŏt′rə-pĭz′əm)
ge′o·tro′pic (jē′ə-trō′pĭk) adj.

geotropism

see GRAVITROPISM.

geotropism

) a plant growth movement that occurs in response to gravity. Thus roots are positively gravitropic (growing downwards), while shoots are generally negatively gravitropic (growing upwards).

geotropism

a tendency of growth or movement toward or away from the earth; the influence of gravity on growth.
References in periodicals archive ?
The root was severely tapered by the compact layer below 70 mm, although geotropic growth was maintained.
Furthermore, a number of epiphytic taxa have vertically oriented leaves that are, unlike their terrestrial counterparts, positively geotropic.
A slow-growing plant, burro's tail consists of porcelain pale blue jelly- bean leaves that will eventually produce geotropic chains 3 feet (or longer) in length.
Avicennia nitida has negatively geotropic root extensions that grow upward into the air from flooded soils.