Fern prothallus, light micrograph

Fern prothallus, light micrograph

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Caption: Fern prothallus, light micrograph. This structure (also called the prothallium) is the gametophyte stage in the life of a fern or other pteridophyte. It forms part of a life cycle known as alternation of generations and is the haploid stage of life of a sexually reproducing plant. The corresponding stage is the sporophyte, which develops from the prothallus following sexual reproduction. The prothallus in turn develops from spores produced by the sporophyte stage.

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Keywords: asexual reproduction, biological, biology, botanical, botany, cell, fern, flora, gametophyte, light micrograph, light microscope, lm, nature, no-one, nobody, plant, prothallium, prothallus, reproduction, reproductive, reproductive organ, section, sectioned, sexual, stage, structure, white background

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