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Fern archegonia


1  Archegonium with egg cell
2  cells of prothallium

English name: non-descript
Scientific name: non-descript
Familia: Filicopsida
Classis: Filicopsida
Phylum: Pteridophyta
Regnum: Plantae

Upperview of the archegonia on a prothallium of a fern. Each archegonium produces a single egg cell. The upper and lower picture show the same archegonia but at a different focus level. After fertilization of the egg cell the zygotes gives rise to an embryo that at the beginning of its development depends on the gametophyt for nutrient supply.

last modified: 5 Jun 2014