Q. When the conditions are dry, a grass leaf curls inward to minimize water loss due to the pressure of
A) Thick cuticle
B) Large xylem cavities
C) Parallel venation
D) Bulliform cells
Explanation
The upper epidermises of monocots have large, thin walled and empty bulliform cells or motor cells containing water. These cells are mainly concerned with rolling and unrolling of leaf. The epidermis is cuticularized.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.