The archegonium is the female sex organ in bryophyte. It’s a flask shaped structure having three parts, namely
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The short basal portion called the stalk,
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The swollen middle portion called venter,
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The tubular terminal portion called neck. The venter encloses a single egg and venter canal cell. When the archegonium ripens the egg undergoes maturation the venter canal cell and neck canal cell disintegrate. It results in the formation of a passage for the entry of sperms for fertilization.
