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Pteridophyta archegonium egg Illustration and Icon
Pteridophyta archegonium egg
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A simplified schematic depicts the female gametangium (archegonium) of a fern, showing a flask-shaped structure on the haploid gametophyte (prothallus). The venter contains a large egg cell (oosphere) with a prominent nucleus, while the narrow neck forms the canal through which sperm reach the egg. In the hierarchy, the organ lies within gametophytic tissue of Pteridophyta. This pertains to plant anatomy and reproductive biology, illustrating the site of fertilization and zygote formation.
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