Wheat leaf, light micrograph

Wheat leaf, light micrograph

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Credit: DR KEITH WHEELER/SCIENCE PHOTO LIBRARY

Caption: Wheat leaf. Light micrograph of a section through a leaf from a common wheat (Triticum aestivum) plant. The vascular bundle (centre to upper centre), or 'vein', of the leaf contains xylem vessels surrounded by xylem parenchyma (protoxylem). Underneath are larger vessels and smaller tracheids (red). beneath this is the phloem, which is composed of thin sieve tubes (red) and small companion cells. There are two outer circles around the vascular bundle, a pericycle (red) and bundle sheath (blue). The vein is joined to the lower epidermis by sclerenchyma supporting tissue. Magnification: x40 when printed 10 centimetres wide.

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Keywords: angiosperm, angiosperms, biological, biology, botanical, botany, bundle sheath, bundles, cell, cell biology, cells, close-up, common wheat, cytological, cytology, detail, histological, histology, leaf, light micrograph, light microscope, lower epidermis, microscopy, monocot, monocots, monocotyledon, monocotyledons, parenchyma, pericycle, phloem, plant, plants, protoxylem, section, sectioned, sieve tube, sieve tubes, small companion cells, stain, stained, structural, structure, structures, supporting tissue, tissue, tracheid, tracheids, triticum aestivum, vascular bundle, vein, vessels, white background, xylem vessel

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