Question

Which of the following cells helps in the rolling of leaves in dry weather?

• A. Bulliform cells
• B. Guard cell
• C. Parenchyma cell
• D. None of the above

Answer 1

The correct option is A Bulliform cells

Bulliform cells are found in the axial or upper surface of the epidermis of monocots. These are large, colourless, bubble-shaped (empty) cells found in clusters near the mid vein. In the presence of insufficient water, these cells loose water and become flaccid. In response to this condition, the leaf rolls inward (to expose the minimum part of the leaf) to minimise the water loss. So, the correct 'Bulliform cells'.