Fern frond, light micrograph

Fern frond, light micrograph

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Caption: Fern frond, light micrograph. Transverse section through the frond of a fern (Cyrtomium falcatum), showing the sporangia. At left is a central vascular bundle (meristele) with central xylem tissue (red) surrounded by phloem (light green). On the underside of the frond are two sori (right) each consisting of an umbrella-shaped indusium with a handle-shaped base (placenta), from which protrude numerous stalked sporangia (containing the reproductive spores). Magnification: x19 when printed at 10 centimetres wide.

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Keywords: anatomical, biological, biology, botanical, botany, cell, cells, cellular, cross-section, cyrtomium falcatum, fern, ferns, flora, frond, indusium, internal structure, light micrograph, light microscope, lm, meristele, nature, part, parts, plant, plant anatomy, plants, pteridophyte, pteridophytes, reproduction, reproductive, reproductive part, reproductive parts, section, sectioned, sori, sorus, sporangia, sporangium, spore, spore capsule, spore capsules, spores, structural, tissue, transverse, vascular cylinder, white background

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