SEM of Pisum sativum

SEM of Pisum sativum

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Credit: DR JEREMY BURGESS/SCIENCE PHOTO LIBRARY.

Caption: Scanning electron micrograph (coloured green) of the upper leaf epidermis of Pisum sativum, the garden pea. The surface is covered with a fuzzy waxy substance which acts as a water repellent. The tiny gaping mouths are stomatal pores, which open & close to regulate the passage of gas between the leaf and the atmosphere. The jigsaw puzzle effect of interlocking pieces corresponds to the arrangement of the epidermal cells; each piece representing a single large cell. Mag: X 100 (35mm). Original is BW print B745/45M

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Keywords: botany, leaf, leaves, nature, pea, pisum sativum, plant, plants, stoma

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