Angiosperm female gametophyte
= Angiosperm female gametophyte
= Embryo sac
{synonym}
The <gametophyte> inside an <angiosperm>'s <ovule>, containing an <ovum> and, in the common arrangement, a central <biological cell> with two polar <cell nuclei>.<Biology 2e by Mary Ann Clark and others>[Biology 2e, §32.1 Female Gametophyte (The Embryo Sac), Figure 32.8; species variation is explicitly noted]{ref}