DR KEITH WHEELER / SCIENCE PHOTO LIBRARY DR KEITH WHEELER / SCIENCE PHOTO LIBRARY
Common sundew. Polarised light micrograph of a section through the leaf of a common sundew (Drosera rotundifolia) plant, showing the glandular hairs (dark). This carnivorous plant has leaf-bearing emergences, penetrated by a single vascular bundle. The glandular hairs secrete a sticky liquid with a fragrance that attracts insects. The insects get stuck on the glands, which then bend to the middle of the leaf to enclose the prey. The glands then secrete digestive enzymes to break down the prey's body. The plant then absorbs the nitrogenous nutrients that are released. Magnification: x2, when printed 10 centimetres wide.
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