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Longitudinal section through a fern archegonium

Legend:

1  ovum
2  neck canal cells

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

After fertilization the zygote starts to divide and forms the embryo. The nutrition comes from the surrounding tissue