In Legumes,it Has Been Shown That "Sleep" (Nastic)movements are Correlated

Question

In legumes,it has been shown that "sleep" (nastic)movements are correlated with
A)positive thigmotropisms.
B)rhythmic opening and closing of K⁺ channels in motor cell membranes.
C)senescence (the aging process in plants).
D)flowering and fruit development.
E)ABA-stimulated closing of guard cells caused by loss of K⁺.

Accepted Answer

Nastic movements are rapid, reversible movements of plant organs that are not dependent on the direction of the stimulus. In legumes, sleep movements are one form of nastic movement that occurs in response to changes in light and temperature. This type of movement is correlated with rhythmic opening and closing of K⁺ channels in motor cell membranes, which control the movement of water in and out of the cells, resulting in the movement of the plant organ.