Female gametophyte of angiospermic plants is represented by

Megasporangium is equivalent to

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.

Describe about pistil (gynoecium).

Definations / Explanation :

$1.$ Micropyle

$2.$ Chalaza

An orthotropous ovule is one in which micropyle and chalaza are