Melanie Perla persed 6 Exploring Plant Cells Co I. How do plants exchange gases with their environment? SURFACE VIEW Pc Did you know that plants 'breathe' through their leaves? Tiny openings on the bottom surface of leaves called stomata (“stoma" is one opening) allow plants to exchange gases necessary for cellular processes, such as photosynthesis. guard cell pore open A pair of specialized cells called guard cells, Surround each stoma opening. They have a very mportant job because by opening and closing comata, they allow gas exchange for photosynthesis d help minimize water loss. Activity I: Stomata Observation ake a small piece of a wandering Jew leaf radescantia pallida). ace it bottom-side up on a slide. ew it under low magnification (red lens), then djum magnification (yellow lens) and finally magnification (blue lens) using a microscope. Ech and label in color several epidermal cells, a of guard cells and a stoma in the circle.
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