CLAUDE NURIDSANY & MARIE PERENNOU / SCIENCE PHOTO LIBRARY CLAUDE NURIDSANY & MARIE PERENNOU / SCIENCE PHOTO LIBRARY
Light micrograph of a tulip petal. This photograph shows the cells of a fresh petal bounded by cell walls (yellow), with cytoplasm (orange, natural colour) filling each of the cells. As the petal begins to wilt, water is lost and the cytoplasm retracts into the centre of each cell. Photo number B060/023 shows a wilted petal from the same flower. Magnification: x150 at 35mm size.
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