Identify the labelled part $X, Y$ and $Z$ from the given figure :
$X-Y-Z$
Central cell - Synergids - Antipodal
Egg - Central cells - Polarnuclei
Synergids - Egg - Central cells
Antipodals - Filliform apparatus - Synergids
Integumented megasporangium is
A Drusa type of embryo sac is
For the formation of tetrasporic embryosac, how many megaspore mother cells are required
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.