Pine needle. Darkfield illuminated polarised light micrograph of a cross-section through a pine needle (Pinus sp.). The section shows the vascular bun

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Pine needle. Darkfield illuminated polarised light micrograph of a cross-section through a pine needle (Pinus sp.). The section shows the vascular bundles and transfusion tissue within the endodermis layer (orange) in the centre of the needle. Transfusion tissue is composed of parenchyma cells (blue) which fill the space between the vascular bundles (left and right). The vascular bundles contain conducting tissue; the phloem which transports products of photosynthesis and the xylem which transports water. Magnification: x100, when printed at 10 centimetres wide.

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Size: 5143px × 3406px
Photo credit: © MAREK MIS/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: -, anatomical, anatomy, biological, biology, botanical, botany, bundle, cell, cells, conifer, coniferous, cross-section, dark, darkfield, endodermis, evergreen, field, flora, gymnosperm, gymnosperms, histological, histology, leaf, light, lm, micrograph, microscope, microscopic, nature, needle, parenchyma, phloem, pine, pinus, plant, polarised, polarized, section, tissue, transfusion, transverse, tree, vascular, xylem