Question

Closure of lid in Pitcher Plant is a

• A. Tropic movement
• B. Turgor movement
• C. Paratonic movement
• D. Autonomic movement

Answer 1

The correct option is B Turgor movement

Tropic movement is growth movement shown by plant in response to a unidirectional external stimulus. Autonomic movement is the spontaneous movement of the protoplasm seen in aquatic plants due to internal stimulus. A movement shown by a plant part in response to an external factor is called as paratonic movement. In this, the direction of movement is controlled by the direction of the stimulus. Nastic movements are non directional movement of plant parts to stimuli. It may be due to turgor change or growth. Closure of lid in pitcher plant is a turgor movement.

Thus, the correct answer is option B.