oriented growth with respect to the force of gravity.
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How to use geotropism in a sentence
Thus I am now observing something about geotropism, and I had no idea a few weeks ago that this would have been necessary.More Letters of Charles Darwin Volume II | Charles Darwin
No phenomenon of tropic movement appears so inexplicable as that of geotropism.
The root is thus supposed to be characterised by "positive" and the shoot by "negative" geotropism.
Hence an agent which acts on the organ from outside, induces phototropic change earlier than variation in geotropism.
Further tests will be given later, to distinguish the phenomenon of Thermonasty from that of Thermo-geotropism.
British Dictionary definitions for geotropism
the response of a plant part to the stimulus of gravity. Plant stems, which grow upwards irrespective of the position in which they are placed, show negative geotropism
- geotropic (ˌdʒiːəʊˈtrɒpɪk), adjective
- geotropically, adverb
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Scientific definitions for geotropism
The directional growth of an organism in response to gravity. Roots display positive geotropism when they grow downwards, while shoots display negative geotropism when they grow upwards. Also called gravitropism
- geotropic adjective (jē′ə-trō′pĭk, jē′ə-trŏp′ĭk)
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