SIDNEY MOULDS / SCIENCE PHOTO LIBRARY SIDNEY MOULDS / SCIENCE PHOTO LIBRARY
Light micrograph of the insectivorous plant, Drosera rotundifolia, commonly known as the sundew, with a trapped insect. The sundew ensares its victims by means of tentacles capped by sticky glands, which simultaneously attract & capture the insect as it forages for food. Any subsequent struggle stimulates the tentacles, which slowly move in, further entangling the insect. Enzymes are secreted which digest the insect. This mechanism has evolved to supplement the diet of the sundew, which grows in mineral deficient environments such as uplands & bogs. Nitrogen in particular is obtained from the insect. Magnification x4.5 at 35mm size.
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