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archegonium

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archegonium [‚ark·ə′gōn·ē·əm]
(botany)
The multicellular female sex organ in all plants of the Embryobionta except the Pinophyta and Magnoliophyta.
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A single-celled oogonium (not a multicellular archegonium, as found in embryophytes) surrounds the single egg cell; however, the nonmotile female gamete, and oogamous reproduction, are similar to embryophytes.
Two theories of origin of the land-plant sporophyte: which is left ... by Blackwell, Will H. / The Botanical Review
 
 
 
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