Male pine cone, light micrograph

Male pine cone, light micrograph

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Caption: Male pine cone. Light micrograph of a longitudinal section through the male cone (strobilus) of a pine tree (Pinus sp.). The cone has a central axis (light-purple), from which emanate scale leaves (microsporophylls, dark blue to dark red). On their undersides are sporophylls bearing sac-like microsporangia (thin purple walls) full of developing microspores (red). When the wall of a microsporangium splits open the microspores are carried by the wind to the female strobilus. Magnification: x8 when printed 10 centimetres wide.

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Keywords: biological, biology, botanical, botany, cell, cell biology, cells, cone, conifer, coniferous, cytology, developing, flora, gymnosperm, gymnosperms, leaves, light micrograph, light microscope, lm, loniudnal section, male, micropores, microsporangia, microsporangium, microspore, microsporophyll, microsporophylls, nature, part, parts, pine, pinus sp., plant, plant structure, reproductive structure, scale leaf, sectioned, sporophyll, sporophylls, strobilus, structures, tree, white background

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