What is stomatal apparatus? Explain the structure of stomata with a labeled diagram.

The stomatal apparatus is present in the leaves of both monocot and dicot leaf. In dicot leaf stomata are present more in the abaxial epidermis and less in the adaxial epidermis. Structure of StomataThe stomata consist of guard cells, which open into an air cavity in the mesophyll tissue, which is made up of parenchymatous cells. The air cavity helps in the exchange of air.