Diagram of archegonium anatomy

An archegonium (pl: archegonia), from the ancient Greek αρχη (beginning) and γονος (offspring), is a multicellular structure or organ of the gametophyte phase of certain plants producing and containing the ovum or female gamete. The Ancient Greek language is the historical stage in the development of the Hellenic language family spanning the Archaic (c In Plants and Algae that undergo Alternation of generations, a gametophyte is the multicellular structure or phase that is Haploid, containing Plants are living Organisms belonging to the kingdom Plantae. An ovum (plural ova) is a Haploid Female reproductive cell or Gamete. A gamete (from Ancient Greek γαμέτης; translated gamete = wife gametes = husband is a cell that fuses with another gamete The archegonium has a long neck and a swollen base. Archegonia are typically located on the surface of the plant thallus, although in the horned liverworts they are embedded. For the chronologer/historian occasionally mentioned in the works of early Christian writers see Thallus (historian. This is an article about the non-vascular plants The name Hornwort is also often applied to an aquatic plant Ceratophyllum demersum in the family Ceratophyllaceae

They are also much-reduced and embedded in the megagametophytes of gymnosperms. Gymnosperm (Gymnospermae are a group of Spermatophyte seed-bearing Plants with Ovules on the edge or blade of an open Sporophyll, which are The term is not used for angiosperms or the gnetophytes Gnetum and Welwitschia because the megagametophyte is reduced to just a few cells, one of which differentiates into the egg cell. The flowering plants or angiosperms ( Angiospermae or Magnoliophyta) are the most widespread group Gnetum is a genus of about 30-35 species of Gymnosperms the sole genus in the family Gnetaceae and order Gnetales. Welwitschia is a monotypic Genus of Gymnosperm Plant, composed solely of the very distinct Welwitschia mirabilis. The function of surrounding the gamete is assumed in large part by diploid cells of the megasporangium (nucellus) inside the ovule. "Haplo" redirects here For the fictional character see The Death Gate Cycle. A sporangium (pl sporangia) is a Plant or fungal structure producing and containing Spores Sporangia occur in angiosperms, Ovule literally means "small egg." In Seed plants the ovule is the structure that gives rise to and contains the female reproductive cells Ovule literally means "small egg." In Seed plants the ovule is the structure that gives rise to and contains the female reproductive cells Gymnosperms have their archegonium formed after pollination inside female pine cones (megastrobili). Gymnosperm (Gymnospermae are a group of Spermatophyte seed-bearing Plants with Ovules on the edge or blade of an open Sporophyll, which are Pollination in angiosperms and Gymnosperms is the process that transfers pollen grains, which contain the male Gametes (sperm to where the female A cone (in formal botanical usage Strobilus, plural strobili is an organ on Plants in the division Pinophyta ( Conifers ^[1]

The corresponding male organ is called the antheridium. An antheridium (plural antheridia) is a Haploid structure or organ producing and containing male Gametes (called antherozoids or Sperm

References

1. ^ Brooklyn Botanic Garden[1]