part_of part of part of plant egg cell egg apparatus embryo sac cell embryo sac egg cell ooc&#233lula del saco embrionario (Spanish, exact) 胚嚢卵細胞 (Japanese, exact) rwalls plant_anatomy The egg apparatus is part of an embryo sac (PO:0025074). PO_GIT:130 PO:0025123 2010-11-15T08:14:32Z A plant egg cell (PO:0020094) that is part of an egg apparatus (PO:0020096).