PLANT PHYSIOLOGY
PLANT MOVEMENT
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Sometimes the direction of stimuli determines the direction of movement.
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Sometimes the direction of moment may not be determined by the direction of stimuli
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Always the direction of stimuli determines the direction of movement
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Always the direction of movement may not be determined by the direction of stimuli.
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Detailed explanation-1: -These movements are non-directional responses to the stimuli. These movements are independent of the direction of the stimulus. These movements can be due to changes in turgor or growth. E.g. the response of the touch-me-not (Mimosa pudica) plant to touch.
Detailed explanation-2: -Nastic movements refer to the non-directional movements of plants that occur due to turgor changes. Plant growth is not associated with these movements. Nastic movements in plants can occur due to changes in light intensity, temperature and response to touch.
Detailed explanation-3: -The movement of a plant part in response to an external stimulus in which the direction of response is not determined by the direction of stimulus is called nastic movement. 2. For example-folding of leaves of a sensitive plant (Mimosa pudica) on touching it.
Detailed explanation-4: -The nastic movements are those movements in plants that occur as the response to a stimulus but do not follow any specific direction of the stimulus. These are direction-independent movements and stimulus position has no effect on their direction.
Detailed explanation-5: -Nastic movements are non-directional movements in plants in response to stimuli.