Stomata on a rose leaf. Coloured scanning electron micrograph (SEM) of the lower leaf surface of a Garden Rose Rosa sp., showing stomata. Epidermal ce

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Stomata on a rose leaf. Coloured scanning electron micrograph (SEM) of the lower leaf surface of a Garden Rose Rosa sp., showing stomata. Epidermal cells (green) cover the leaf surface. Scattered on the epidermis are stomata (singular: stoma), tiny pores each of which is bordered by two kidney- shaped guard cells. The stoma at lower left is open. Guard cells serve to open and close each stoma: opening the pore allows gases to be exchanged by leaf tissues during photosynthesis; and closing the pore at night or during dry periods prevents water loss. In the rose, more stomata occur on the underside of leaves. Magnification: x270 at size. Magnification: x750 at inch size.

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Size: 3543px × 2668px
Photo credit: © POWER AND SYRED/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: botany, leaf, leaves, nature, plant, plants, rosa, rose, sp., stoma, stomata, surface