Q. In some plants, sleep movement of leaves is due to
A) Excess of photosynthesis
B) Osmotic changes at base of leaf
C) Excess of respiration
D) Excess of transpiration
Explanation
In plants, some movements occur due to change of turgor pressure in cells particularly at the base of petiole of leaves and flowers. This turgor pressure change is related with change in osmotic pressure.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.