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tropism in response to gravity, i.e., either toward or away from the earth; growth influenced by gravity.
A form of positive barotaxis in which there is a tendency to growth or movement toward or into the earth.
[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.
ge′o·tro′pic (jē′ə-trō′pĭk) adj.
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).
a tendency of growth or movement toward or away from the earth; the influence of gravity on growth.