Botany - Anatomy of Flowering Plants Question with Solution | TestHub

On the upper surface of the isobilateral leaves of monocots large, bubble-shaped cells are present called bulliform cells. These cells help in rolling leaves to prevent transpiration and loss of water. Guard cells surround the stomatal pore and help in the opening and closing of the stomata. Pores formed by rupture of the epidermal region of root and stem at certain locations which help in aeration is called lenticels. These are commonly seen on the bark after secondary growth. Epidermal cells found around the guard cells are called subsidiary cells. The cells are also referred to as accessory cells.