Epidermal cells are often modified to perform specialised functions in plants. Name some of them and function they perform.

Explanation

(i) Silica cells : These cells contain silica granules.
(ii) Cork cells : Such cells bear solid organic substances.
(iii) Lithocytes : They bear calcium carbonate crystals.
(iv) Bulliform cells : They are motor cells and help in rolling of leaves to reduce the transpiration in grasses.