Q. Which statements are correct about guard cells? I. They are modified ground tissue II. They are chlorophyllous III. Its outer wall is thin and inner wall is highly thickened IV. They regulate stomatal movement for transpiration and gaseous exchange
A) All except I
B) All except II
C) All except III
D) All except IV
Explanation
Each stoma is composed of two bean-shaped cells known as guard cells. These are modified ground tissue. They have the chlorophylls and performs photosynthesis. The outer walls of guard cells (away from the stomatal pore) are thin and inner wall (toward the stomatal pore) are highly thickened
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.