KENT WOOD / SCIENCE PHOTO LIBRARY KENT WOOD / SCIENCE PHOTO LIBRARY
Plant root. Light micrograph of a root from a monocotyledon plant. The root hairs on the outside of the root are stained with Rheinberg colour so that they appear red. The root hairs form an intimate contact with the soil particles, enormously increasing the root's surface area. Plants use roots for anchorage, and to absorb water and minerals from the soil. Monocotyledons make up about a quarter of all flowering plant species; the class includes grasses, orchids, lilies, and palms. Magnification: x12 at 35mm size.
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