embryo sac central cell plant_anatomy 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_GIT:182 中央細胞 (Japanese, exact) c&#233lula central (Spanish, exact) PO:0020090 An embryo sac cell (PO:0025026) that is largest cell in a mature embryo sac (PO:0025074). embryo sac cell