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Iris stomata, light micrograph

Iris stomata, light micrograph

C026/2542

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Credit

MAREK MIS / SCIENCE PHOTO LIBRARY MAREK MIS / SCIENCE PHOTO LIBRARY

Caption

Iris stomata. Polarised light micrograph of tissue from an Iris sp. plant, showing the stomata (round). Stomata are pores that open and close in order to regulate gas exchange in a plant. The aperture of each stoma is controlled by a pair of specialised cells known as guard cells (sausage-shaped). These cells swell to close the pore and shrink to open it. Stomata are found mainly on the underside of leaves. Magnification: x400 when printed 10 centimetres wide.

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Model release not required. Property release not required.

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