Question

Thin-walled large cells present in the leaf epidermis, and capable of contraction and expansion are

• A. Guard cells
• B. Subsidiary cells
• C. Gland cells
• D. Bulliform cells

Answer 1

The correct option is D Bulliform cells

A.Guard cells – modified epidermal cells present in the stomata. They perform transpiration

B.Subsidiary cells – epidermal cells present around the guard cells in stomata.They perform transpiration

C.Gland cells – cells which secret substances,

D.Bulliform cells – the large thin walled epidermal cells present in the adaxial epidermis of grass leaves called Bulliform cells. The involve in the contraction or rolling and expansion or unrolling of leaf lamina.

So, the correct option is ‘Bulliform cells’.