HORTICULTURE

Detailed explanation-1: -Stoma (Plural: stomata) is a tiny opening present on the surface of leaves. It has a pore regulated by guard cells and gaseous exchange takes place through it. Carbon dioxide enters the leaf and water vapour and oxygen leave the leaf through this.

Detailed explanation-2: -On the underside of leaves and elsewhere, depending on the plant, are tiny openings called stomata-thousands of them per leaf with variations by plant species. Like little castle gates, pairs of cells on the sides of the stomatal pore-known as guard cells-open their central pore to take in the carbon dioxide.

Detailed explanation-3: -Carbon dioxide and oxygen cannot pass through the cuticle, but move in and out of leaves through openings called stomata (stoma = “hole"). Guard cells control the opening and closing of stomata. When stomata are open to allow gases to cross the leaf surface, the plant loses water vapor to the atmosphere.