NEET BIOLOGY

Detailed explanation-1: -Stomata, regulated by guard cells, allow gases to pass in and out of the leaf. We may not be able to see them with the naked eye, but the leaves of plants contain tons of tiny holes, or pores, called stomata (sing. stoma).

Detailed explanation-2: -Stomata and Gas Exchange Each stoma is surrounded by two guard cells, which can open and close depending on environmental conditions. When moisture is plentiful, the guard cells swell with water, forcing the opening of the stoma open and allowing gas exchange to occur.

Detailed explanation-3: -How do plants breathe through stomata? Key regulators of stomata are plant vacuoles, fluid-filled organelles bound by a single membrane called the tonoplast. Like animals, plants breathe. The gas exchange into and out of a plant leaf occurs at the underside of leaves, and the process is precisely regulated.