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Dahlia tuber, light micrograph

Dahlia tuber, light micrograph

C011/5225

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Credit

DR KEITH WHEELER / SCIENCE PHOTO LIBRARY DR KEITH WHEELER / SCIENCE PHOTO LIBRARY

Caption

Dahlia tuber. Polarised light micrograph of a section through the tuber of a Dahlia sp. plant, showing inulin crystals. The Dahlia produces root tubers that are mostly made up of scattered vascular bundles. Parenchyma tissue cells store the insoluble polysaccharide inulin as a means of storing energy. When the tubers are immersed in alcohol the inulin crystallises near bundles as spheroid crystals. Magnification: x7, when printed 10 centimetres wide.

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Model release not required. Property release not available.

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