embryo sac central cell An embryo sac cell (PO:0025026) that is largest cell in a mature embryo sac (PO:0025074). In most angiosperms, the embryo sac central cell contains two polar nuclei, and, after double fertilization, develops into an endosperm. In some angiosperms, such as Illicium, the embryo sac central cell contains a single polar nucleus. Embryo sac central cell is distinct from archegonium central cell (PO:0025509). PO:0020090 PO_GIT:182 c&#233lula central (Spanish, exact) plant_anatomy 中央細胞 (Japanese, exact) embryo sac cell