The leaf structure is adapted for gas exchange between plants and the environment. The cells in the spongy mesophyll have tiny pores, termed as stomata, present in the leaf surface. Most of the stomata are found in the lower epidermis. These tiny pores control gas exchange. Opening and closing of stomata depend on the guard cell turgidity.
Diffusion of oxygen, carbon dioxide and water vapor in and out of the leaf is highest when these stomata are open.
<span>Stomata allow gasses to flow in and out of a leaf. </span> Hope this answer has helped you. If it has, please mark this answer as brainliest. Thanks.
Protons have a positive charge. The number of protons in a nucleus determines the identity of the atom (element) and this number is called the atomic number.
