A typical angiosperm embryo sac at maturity, is
a)	4 – nucleate, 2 – celled	b)	8 – nucleate, 7 – celled
c)	4 – nucleate, 4 – celled	d)	8– nucleate,4 – celled

(b)

Polygonum type of embryo sac is the most common in angiosperms. It is 7-celled and 8-nucleate. The nuclei are arranged in such a way that three organized at micropylar end and form egg apparatus (one egg and two synergids), two nuclei migrate to centre and form polar nuclei in a single central cell and three nuclei at chalazal pole organized into antipodal cells.