Daisy leaf surface, SEM

Daisy leaf surface, SEM

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Credit: STEVE GSCHMEISSNER/SCIENCE PHOTO LIBRARY

Caption: Daisy leaf. Coloured scanning electron micrograph (SEM) of the surface of a daisy leaf (family Asteraceae, formerly Compositae). Three stomata (leaf pores) can be seen. Stomata are the site of gaseous exchange in a plant. The opening and closing of the stomata is controlled by semi- circular guard cells, which swell and become turgid to close the openings.

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Keywords: biological, biology, botanical, botany, cell, cells, coloured, daisy, epidermal, epidermis, false-colour, false-coloured, guard cell, leaf, nature, opening, plant, pore, pores, respiratory, scanning electron micrograph, scanning electron microscope, sem, stomata, stomatas, structure, structures, surface

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