Question

All of the following are the features of guard cells except

• A. These are the only epidermal cells that contain chloroplasts.
• B. Guard cells can undergo rapid turgor changes.
• C. The opening and closing of the stomatal pore is a function of guard cells.
• D. Their outer and lateral walls are comparatively thicker than inner wall.

Answer 1

The correct option is D Their outer and lateral walls are comparatively thicker than inner wall.

Guard cells are epidermal cells surrounding each stoma. They are the only epidermal cells that contain chloroplasts. They undergo rapid turgor changes that causes opening and closing of stomatal pore. Their outer and lateral walls are comparatively thinner than the inner wall.