Carob tree leaf surface, SEM

Carob tree leaf surface, SEM

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Caption: Carob tree (Ceratonia siliqua) leaf surface, coloured scanning electron micrograph (SEM). The blue/green structures are stomata (leaf pores), the site of gaseous exchange in a plant. The opening and closing of the stomata is controlled by the semi-circular guard cells. When the guard cells are turgid the stomata are open and when they are flaccid the stomata are closed. Magnification: x360 when printed at 10 centimetres wide.

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Keywords: biological, biology, botanical, botany, carob tree, ceratonia siliqua, coloured, false-coloured, flora, gaseous exchange, green, guard cell, hair, leaf, nature, plant, pore, pores, protection, protective, scanning electron micrograph, scanning electron microscope, sem, spike, spine, stoma, stomata, surface, trichome

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