QQuestion
Select which of the following is the feature of tropic movement —
(a) Induced movement of curvature of particular parts of plant controlled by the direction of the stimulus
(b) It is one type of turgor movement
(c) Induced movement of curvature of particular parts of plant controlled by the intensity of the stimulus
(d) Does not occur under the influence of Auxin
✓Answer
(a) Induced movement of curvature of particular parts of plant controlled by the direction of the stimulus
Explanation
Tropic movements are growth movements of plants in response to an external stimulus, and the movement is always oriented with respect to the direction of the stimulus, such as light or gravity. This means the plant bends either towards or away from the stimulus direction, which distinguishes tropism from other types of movements.
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