AP BIOLOGY

PLANTS

THE LEAF

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The openings on the underside of a leaf that allow air in and out of the leaf are called ____
A
Epidermis
B
Palisades layer
C
Stomata
Explanation: 

Detailed explanation-1: -Stomata are generally more numerous on the underside of leaves. They provide for the exchange of gases between the outside air and the branched system of interconnecting air canals within the leaf. A stomate opens and closes in response to the internal pressure of two sausage-shaped guard cells that surround it.

Detailed explanation-2: -Introduction. Stomata (singular stoma, from the Greek for “mouth”) are pores on the surface of the leaves and other aerial parts of most higher plants that allow uptake of CO2 for photosynthesis and the loss of water vapor from the transpiration stream.

Detailed explanation-3: -Stomata are responsible for allowing gas exchange between the inside of the leaf and the atmosphere. Stoma is the singular and stomata is the plural form.

Detailed explanation-4: -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-5: -Stomata are cell structures in the epidermis of tree leaves and needles that are involved in the exchange of carbon dioxide and water between plants and the atmosphere. From: Introduction to Forestry and Natural Resources, 2013.

There is 1 question to complete.