Pine cone. Light micrograph of a section through part of a male cone (strobilus) of a pine tree (Pinus sp.). On the undersides of the scale leaves (mi

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Pine cone. Light micrograph of a section through part of a male cone (strobilus) of a pine tree (Pinus sp.). On the undersides of the scale leaves (microsporophylls) are sac-like microsporangia (blue walls) full of developing microspore pollen grains (blue dots). When the wall of a microsporangium splits open the grains are carried by the wind to the female strobilus. Magnification: x180 when printed at 10 centimetres wide.

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Size: 5120px × 3413px
Photo credit: © ANTONIO ROMERO/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: aeroallergens, allergen, anatomy, biological, biology, botanical, botany, cell, cone, conifer, flora, gamete, grains, gymnosperm, histology, light, lm, longitudinal, male, micrograph, microscope, microsporangia, microsporangium, microspore, microspores, monoecious, nature, palynology, pine, pinus, plant, pollen, reproduction, reproductive, section, sectioned, sex, sporophyll, strobilus, structure, tree, vascular