AP BIOLOGY

Detailed explanation-1: -In botany, a stoma (from Greek , “mouth", plural “stomata"), also called a stomate (plural “stomates"), is a pore found in the epidermis of leaves, stems, and other organs, that controls the rate of gas exchange.

Detailed explanation-2: -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.

Detailed explanation-3: -Open or close the gate – stomata action under the control of phytohormones in drought stress conditions. Two highly specialized cells, the guard cells that surround the stomatal pore, are able to integrate environmental and endogenous signals in order to control the stomatal aperture and thereby the gas exchange.

Detailed explanation-4: -Stomata. Stomata are tiny holes found in the underside of leaves. They control water loss and gas exchange by opening and closing. They allow water vapour and oxygen out of the leaf and carbon dioxide into the leaf.

Detailed explanation-5: -The correct answer is Stomata. Stomata are the small pores present on the leaf surface and responsible for the exchange of gases and water vapours in the process of transpiration in plants.