Mare's tail stem, light micrograph

Mare's tail stem, light micrograph

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Credit: DR KEITH WHEELER/SCIENCE PHOTO LIBRARY

Caption: Mare's tail stem. Polarised light micrograph of a transverse section through a stem of the aquatic mare's tail (Hippuris vulgaris) plant. All aquatic plants (hydrophytes) have a similar stem structure. The epidermis (outer layer) has a thin cuticle that is permeable to water. The cortex is very wide and the parenchyma has large air spaces (lacunae, blue spaces). The vascular tissue is at centre and there is an outer endodermis (blue ring) above a ring of phloem (yellow-green) and an inner ring of xylem. The pith (centre) consists of large-celled parenchyma (deep green). Magnification: x103 when printed 10 centimetres wide.

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Keywords: angiosperm, angiosperms, aquatic, biological, biology, blue background, botanical, botany, bundle, cell, cell biology, cells, common mare's tail, cortex, cut out, cut outs, cut-out, cut-outs, cuticle, cutout, cutouts, cytology, flora, hippuris vulgaris, horsetail, hydrophyte, hydrophytic, light micrograph, light microscope, lm, mare's tail, mares tail, nature, parenchyma, permeable, phloem, pith, plant, plant structure, section, sectioned, stem, support, supportive, vascular tissue, xylem

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