DENNIS KUNKEL MICROSCOPY / SCIENCE PHOTO LIBRARY DENNIS KUNKEL MICROSCOPY / SCIENCE PHOTO LIBRARY
Hibiscus sp, coloured scanning electron micrograph (SEM). Plant trichomes are fine epidermal outgrowths that have diverse structure and function. Often they are used for protection. Examples are hairs, glandular hairs, scales, and papillae. A common type of trichome is a hair. Plant hairs may be unicellular or multicellular, branched or unbranched. Multicellular hairs may have one or several layers of cells. Branched hairs can be dendritic (tree-like), tufted, or stellate (star-shaped) such as in the hibiscus plant. Magnification: x36 when shortest axis printed at 25 millimetres.
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