Multiple choice Thus a typical angiosperm embryo sac , at maturity 8 - nucleate, 8 celled 7 - nucleate, 8 celled 7 - nucleate, 7 celled 8 - nucleate, 7 celled Reveal answer Fill a bubble to check yourself D Correct answer Explanation A mature angiosperm embryo sac contains 8 nuclei but only 7 cells, because the two polar nuclei reside in a single large central cell.