Fern stem, light micrograph

Fern stem, light micrograph

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Credit: DR KEITH WHEELER/SCIENCE PHOTO LIBRARY

Caption: Fern stem, light micrograph. Transverse section through a rachis (stem) of the bracken fern (Pteridium aquilinum). Under the outer epidermis (orange) is a thin cortex (yellow and red) of thick-walled cells (sclerenchyma). The rest of the stem consists of a supporting tissue of parenchyma cells (red walls). Within the stem, embedded in the parenchyma, are vascular strands (oval-shaped) called the meristeles. At the centre of these are thick-walled wood cells (xylem). Magnification: x14 when printed at 10 centimetres wide.

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Keywords: anatomical, biological, biology, blue background, botanical, botany, bracken fern, cell, cells, cellular, cortex, cross-section, cut out, cut outs, cut-out, cut-outs, cutout, cutouts, epidermis, fern.stem, ferns, flora, internal structure, light micrograph, light microscope, lm, meristele, meristeles, nature, parenchyma, part, parts, plant, plant anatomy, plants, pteridium aquilinum, pteridophyte, pteridophytes, rachis, sclerenchyma, section, sectioned, structural, tissue, transverse, vascular, xylem

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