participates_in participates in plant organ multicellular plant gametangium gametangium (broad) A plant organ (PO:0009008) that produces one or more gametes (PO:0025006) and participates in the gametophyte development stage (PO:0028003). gametangio (Spanish, exact) 2010-11-15T08:57:32Z PO:0025124 rwalls PO_GIT:513 多細胞植物配偶子嚢 (Japanese, exact) plant_anatomy The multicellular plant gametangium; an archegonium (PO:0025126) and/or an antheridium (PO:0025125), occurs in bryophytes, pteridophytes and gymnosperms, but never in angiosperms. gametophyte development stage