Question

Movement of plants in response to external stimuli, where the direction of the movement is not dependent on the direction of the stimulus, is called ___

Answer 1

Nastic movements are plant movements that occur in response to environmental stimuli but unlike tropic movements, the direction of the response is not dependent on the direction of the stimulus. Nastic movements in plants are reversible and repeatable movements in response to a stimulus whose direction is determined by the anatomy of the plant. Examples include the diurnal movement of leaves and the response of insectivorous plants, such as the Venus flytrap, to prey.