Question

Sleep movement of Papaya/Balsam is

• A. Autonomic movement
• B. Tropic movement
• C. Movement of locomotion
• D. Growth movement

Answer 1

The correct option is D Growth movement

Tropic movement is growth movement shown by plant in response to a unidirectional external stimulus. Leaves and leaflets shows nyctinastic movement, that is movement in night or in dark. This is also called as sleep movement. In this, the leaves become vertical during night. This is growth movement. Leaf shows daily rhythmic movement due to differential growth of upper and lower halves of the petiole. It is seen in papaya and balsam.

Thus, the correct answer is option D.