paratonic
/ (ˌpærəˈtɒnɪk) /
adjective
botany
(of a plant movement) occurring in response to an external stimulus
Words nearby paratonic
Example sentences from the Web for paratonic
The change in torsion is, moreover, determined in reference to the paratonic action of incident geotropic stimulus.
Life Movements in Plants, Volume II, 1919 |Sir Jagadis Chunder BoseThey are mostly reflex or paratonic, and due to external stimuli.
The Wonders of Life |Ernst HaeckelI find that this autonomous movement becomes modified or even arrested by the paratonic effect of light.
Life Movements in Plants, Volume II, 1919 |Sir Jagadis Chunder BoseI have already referred to the distinction that is made between nastic and paratonic movements.
Life Movements in Plants, Volume II, 1919 |Sir Jagadis Chunder Bose