Sharp rush stem, light micrograph

Sharp rush stem, light micrograph

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Credit: DR KEITH WHEELER/SCIENCE PHOTO LIBRARY

Caption: Sharp rush stem. Light micrograph of a section through the stem of a sharp rush (Juncus acutus) plant. This arid-adapted plant (xerophyte) has scattered vascular bundles. From the outer to the inner layer: thick-celled silicified epidermis (pink) covered with a thick cuticle (brown-green); triangular patches of fibres in-between which is columnar palisade tissue containing chloroplasts (blackish-brown); thick-walled parenchyma tissue (hexagonal); thin-walled parenchyma tissue containing oval vascular bundles; supporting fibres (whitish-pink); phloem (blue); xylem (pink-yellow). Magnification: x37 when printed 10 centimetres wide.

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Keywords: angiosperm, angiosperms, arid-adapted, biological, biology, botanical, botany, bundle, cell, cell biology, cells, chloroplast, chloroplasts, close-up, columnar, cuticle, cytological, cytology, detail, fibre, histological, histology, juncus acutus, layer, layers, light micrograph, light microscope, microscopy, monocot, monocots, monocotyledon, monocotyledons, palisade tissue, parenchyma, phloem, plant, plants, section, sectioned, sharp rush, silicified epidermis, stain, stained, stem, structural, structure, structures, supporting fibres, tissue, vascular bundles, xerophyte, xylem

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