Iris root, light micrograph

Iris root, light micrograph

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Caption: Iris root. Polarised light micrograph of a section through the root of an Iris plant (Iris germanica), showing a vascular cylinder (centre) and parenchyma cells packed with starch grains. The cylinder is comprised of a central cluster of parenchyma cells (red) surrounded by vascular bundles (brown) and the endodermis (multicoloured ring). The largest vessels seen here are metaxylem, part of the xylem tissue (orange) in the vascular bundles. Xylem transports water and mineral nutrients from the roots throughout the plant, while the phloem (brown/dark green), the other component of the bundles, transports carbohydrates and plant hormones. Magnification: x100 when printed 10 centimetres wide.

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Keywords: anatomical, biological, biology, botanical, botany, cell, cells, endodermal, endodermis, iris germanica, light micrograph, light microscope, metaxylem, monocot, monocotyledon, nature, phloem, plant, plant anatomy, plants, polarised light micrograph, polarised light microscope, root, roots, section, sectioned, slice, tissue, tissues, transport, transportation, transverse, vascular, vascular bundle, vessel, xylem

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