Feverfew leaf surface, SEM

Feverfew leaf surface, SEM

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Credit: DAVID MCCARTHY/SCIENCE PHOTO LIBRARY

Caption: Feverfew leaf surface. Coloured scanning electron micrograph (SEM) of a stoma on the leaf of a feverfew (Tanacetum parthenium) plant. Stomata are pores that are the site of gaseous exchange in the plant. The opening and closing of the stomata is controlled by semicircular guard cells. When the guard cells are turgid the stomata are open and when they are flaccid the stomata are closed.

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Keywords: biological, biology, botanical, botany, colored, coloured, feverfew, flora, gaseous exchange, green, guard cell, leaf, nature, plant, pore, scanning electron micrograph, scanning electron microscope, sem, stoma, stomata, surface, tanacetum parthenium

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