Rose stem, light micrograph

Rose stem, light micrograph

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Credit: DR KEITH WHEELER/SCIENCE PHOTO LIBRARY

Caption: Rose stem. Light micrograph of a cross-section through the stem of a rose (Rosa sp.). The three triangular protrusions are thorns, which protect the plant from being eaten by animals. Each thorn is comprised of the outer epidermis, with a waxy outer cuticle (yellow), a woody layer (brown) and an inner mass of dense parenchyma (pink). The stem is composed of epidermis, bands of parenchyma and chlorenchyma, cortex, vascular bundles - consisting of outer fibres (yellow), phloem (red), cambium (pink) and xylem (brown and pink) - and then the central pith (white). Magnification: x14 when printed 10 centimetres wide.

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Keywords: anatomical, anatomy, angiosperm, angiosperms, biological, biology, botanical, botany, cambium, cells, cortex, cross section, cross-section, cut out, cut outs, cut-out, cut-outs, cutout, cutouts, dicot, dicotyledon, flora, internal, light micrograph, light microscope, microscopy, nature, phloem, pith, plant, plant anatomy, plants, rosa sp., rose, sectioned, slice, sliced, stem, thorn, thorns, thorny, tissue, vascular bundle, xylem

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