Draw the diagram of a mature embryo sac and show its 8-nucleate, 7-celled nature. Show the following parts: antipodals, synergids, egg, central cell, polar nuclei.

The antipodal is 3-celled with 3 nucleus.

Polar nuclei and Central cell constitute 2 nucleus and it is 1-celled.

Egg apparatus is 3-celled with 3 nucleus.

So in total there are 7-celled and 8-nucleate.