Question

Desmodium gyrans shows

• A. Autonomic movements of variation
• B. Autonomic movements of growth
• C. Paratonic movements of variation
• D. Paratonic movements of growth

Answer 1

The correct option is A Autonomic movements of variation

Autonomic movement is the spontaneous movement of the protoplasm due to internal stimulus. Autonomic movement of variation takes place due to changes in the turgidity of cells. The leaves of Desmodium gyrans shows jerky lateral movement due to turgor change which results in the alteration of osmotic content. A movement shown by a plant part in response to an external factor is called as paratonic movement.

Thus, the correct answer is option A.