Grape vine stem. Polarised light micrograph of a cross-section through a young stem from the grape vine (Vitis vinifera). Most of the stem is a large

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Grape vine stem. Polarised light micrograph of a cross-section through a young stem from the grape vine (Vitis vinifera). Most of the stem is a large central pith made up of parenchyma tissue (blue). Below the outer epidermis layer is a thin cortex with supporting fibres (yellow patches). Between the cortex and pith is a ring of vascular bundles broken up by medullary rays (black) that flexibility for this climbing stem. Within the vascular layers is an outer layer of phloem (light blue) and an inner xylem layer (yellow and red). Magnification: x14 when printed at 10 centimetres across.

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Size: 4264px × 4264px
Photo credit: © DR KEITH WHEELER/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: biological, biology, botanical, botany, bundle, bundles, cell, cells, cellular, circle, circular, cross-section, cut, cut-, cut-outs, cutout, cutouts, flora, grape, light, lm, micrograph, microscope, microscopy, nature, nutrient, outs, phloem, plant, plm, polarised, polarized, section, sectioned, stem, tissue, transport, transverse, vascular, vine, vinifera, vitis, water, xylem