NEET Biology Anatomy Of Flowering Plants Based Practice Questions & Answers with Viewers Discussion and Detailed Explanation

Answer: (d)

The leaf and stem epidermis of the plant are covered with pores called stomata. Each stomata is surrounded by a pair of specialised epidermal cells known as guard cells which are in some cases further surrounded by another category of less modified epidermal cells known as subsidiary cells which provide support to the guard cells.