Fern sporocarp, light micrograph

Fern sporocarp, light micrograph

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Caption: Fern sporocarp. Light micrograph of a transverse section through a sporocarp from a Marsilea fern. This section reveals two rows (pink stripes) of sori, structures that produces the spores. The sporocarp has a hard covering (brown) and is found at the base of the leaf stalk. There are two kinds of spores (several at centre): female megaspores (pink large balls) and male microspores (small red balls). These are released and germinate in water, with both male and female spores going through a succession of developmental stages that culminates in fertilisation. Magnification: x13 when printed at 10 centimetres wide.

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Keywords: anatomical, anatomy, aquatic, biological, biology, botanical, botany, cell, cells, cellular, close-up, detail, female, fern, flora, freshwater, histological, histology, internal, light micrograph, light microscope, lm, male, marsilea, megaspore, megaspores, microspore, microspores, nature, plant, pteridophyte, reproduction, reproductive, section, sectioned, sori, sorus, spore, spores, sporocarp, tissue, transverse, under water, underwater, water

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