Nyctinasty and Thigmonasty


Nyctinasty is a nastic movement (a non-directional responses to stimuli; for instance, temperature or humidity) that is associated with diurnal changes of temperature or light intensity.

Thigmonasty, also known as seismonasty, is a nastic movement in response to shock, especially the rapid folding of the leaflets of the sensitive plant due to changes in turgor pressure (cells distended beyond the natural state by some internal agent, especially fluid, or expansive force) caused by vibration.

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