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archegonium wikipedia jump to content main menu main menu move to sidebar hide navigation main page contents current events random article about wikipedia contact us contribute help learn to edit community portal recent changes upload file special pages search search appearance donate create account log in personal tools donate create account log in contents move to sidebar hide top 1 bryophytes 2 gymnosperms 3 references toggle the table of contents archegonium 37 languages afrikaans العربية беларуская български bosanski català čeština dansk deutsch esperanto español فارسی français gaeilge galego עברית հայերեն bahasa indonesia ido italiano қазақша 한국어 кыргызча latina lietuvių latviešu nederlands polski português русский srpskohrvatski српскохрватски svenska тоҷикӣ українська oʻzbekcha ўзбекча tiếng việt 中文 edit links article talk english read edit view history tools tools move to sidebar hide actions read edit view history general what links here related changes upload file permanent link page information cite this page get shortened url switch to legacy parser print export download as pdf printable version in other projects wikidata item appearance move to sidebar hide from wikipedia the free encyclopedia organ of the gametophyte of certain plants producing and containing the ovum diagram of archegonium anatomy an archegonium pl archegonia from the ancient greek ἀρχή beginning and γόνος offspring is a multicellular structure or organ of the gametophyte phase of certain plants producing and containing the ovum or female gamete the corresponding male organ is called the antheridium the archegonium has a long neck canal or venter and a swollen base archegonia are typically located on the surface of the plant thallus although in the hornworts they are embedded bryophytes edit in bryophytes and other cryptogams sperm reach the archegonium by swimming in water films whereas in pinophyta and angiosperms the pollen are delivered by wind or animal vectors and the sperm are delivered by means of a pollen tube citation needed gene expression pattern determined by histochemical gus assays in physcomitrella patens in the moss physcomitrella patens archegonia are not embedded but are located on top of the leafy gametophore s figure the polycomb protein fie is expressed in the unfertilized egg cell right as the blue colour after gus staining reveals soon after fertilisation the fie gene is inactivated the blue colour is no longer visible left in the young embryo 1 2 gymnosperms edit they are much reduced and embedded in the megagametophytes of gymnosperms 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 function of surrounding the gamete is assumed in large part by diploid cells of the megasporangium nucellus inside the ovule gymnosperms have their archegonium formed after pollination inside female conifer cones megastrobili 3 references edit assaf mosquna aviva katz eva l decker stefan a rensing ralf reski nir ohad 2009 regulation of stem cell maintenance by the polycomb protein fie has been conserved during land plant evolution development 136 2433 2444 the polycomb gene fie is expressed blue in unfertilised egg cells of the moss physcomitrella patens right and expression ceases after fertilisation in the developing diploid sporophyte left in situ gus staining of two female sex organs archegonia of a transgenic plant expressing a translational fusion of fie uida under control of the native fie promoter development about the cover july 2009 136 14 archived from the original on 2009 06 26 retrieved 2009 07 03 brooklyn botanic garden archived from the original on 2009 10 27 retrieved 2008 02 09 v t e botany history outline subdisciplines archaeobotany astrobotany bryology dendrology ethnobotany paleobotany phycology phytochemistry phytogeography geobotany plant anatomy plant ecology plant intelligence plant pathology plant physiology plant groups algae archaeplastida bryophyte non vascular plants vascular plants fern lycophyte spermatophytes gymnosperm angiosperm plant anatomy plant morphology glossary plant cells cell wall phragmoplast plastid plasmodesma vacuole tissues cork ground tissue mesophyll meristem storage organs vascular tissue vascular bundle wood vegetative bulb root rhizoid rhizome shoot bud leaf cataphyll petiole sessility stem reproductive incl flower archegonium antheridium androecium pollen stamen anther filament staminode tapetum flower aestivation flower development floral diagram floral formula floral symmetry whorl fruit anatomy berry capsule nut pyrena seed dispersal endosperm gametophyte gynandrium gynoecium carpel ovary locule ovule stigma style hypanthium floral cup inflorescence bract pedicellate raceme umbel perianth tepal petal sepal plant embryo receptacle sporophyll sporophyte surface structures cuticle epicuticular wax epidermis nectar stoma thorns spines and prickles trichome plant physiology materials aleurone apical dominance bulk flow cellulose nutrition photosynthesis chlorophyll phytomelanin plant hormones respiration gas exchange cellular respiration sap starch sugar transpiration turgor pressure plant growth and habit habit cushion plants rosettes shrubs prostrate shrubs subshrubs succulent plants trees vines lianas herbaceous plants secondary growth woody plants reproduction evolution ecology alternation of generations double fertilization evolutionary development evolutionary history timeline flora germination pollination artificial pollinators pollen tube self sporangium microsporangia microspore megasporangium megaspore spore plant taxonomy biological classification botanical nomenclature botanical name correct name author citation international code of nomenclature icn icn for cultivated plants icncp cultivated plant taxonomy citrus taxonomy cultigen cultivar group grex history of plant systematics herbarium international association for plant taxonomy iapt plant taxonomy systems taxonomic rank practice agronomy floriculture forestry horticulture phytochemical lists related botanical terms botanists by author abbreviation botanical expeditions individual trees oldest trees superlative trees tallest trees plants category retrieved from https en wikipedia org w index php title archegonium oldid 1370598280 categories plant anatomy gymnosperms plant reproduction hidden categories articles with short description short description is different from wikidata all articles with unsourced statements articles with unsourced statements from december 2023 this page was last edited on 22 august 2026 at 01 29 utc page was rendered with parsoid text is available under the creative commons attribution sharealike 4 0 license additional terms may apply by using this site you agree to the terms of use and privacy policy wikipedia is a registered trademark of the wikimedia foundation inc a non profit organization privacy policy about wikipedia disclaimers contact wikipedia legal safety contacts code of conduct developers statistics cookie statement mobile view search search toggle the table of contents archegonium 37 languages add topic