In the upper epidermis of monocots (e.g., wheat, maize cereals, grasses, etc), there are some large cells, found in groups, which are known as motor cells or bulliform cells. These cells help in rolling of leaves in dry climate.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.