Definition of archegonium in English:
noun (plural archegonia-nēə)Botany
The female sex organ in mosses, liverworts, ferns, and most conifers.
- Antheridia formed on the dorsal and ventral surfaces of the wing, while archegonia formed on the ventral surface of the anterior cushion.
- Dispersed by wind, these small spores germinate into small, freeliving, disc-shaped gametophytes that produce either archegonia - organs in which egg cells are formed - or sperm-producing antheridia.
- Notwithstanding their general similarity, the archegonia of mosses differ externally from antheridia in having a longer neck and longer stalk.
Definition of archegonium in:
- British & World English dictionary
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