Question

Do guard cells have rigid or elastic walls? Justify your answer

Answer 1

Each stomata is composed of a special type of cell known as guard cells which control the opening & closing of the stomata.The opposing inner walls of the guard cells are thick and inelastic. The remaining walls are thin and elastic. But Guard cells have mostly elastic walls. This is because the stomatal pores have to continuously open and close to allow exchange of gases through them.