Two nuclei with one cell are found in
Antipodal cell
Chalazal cell
Central cell
Synergid cell
$A$ : Filiform apparatus guides the pollen tube into the synergids.
$R$ : It is special cellular thickening at micropylar tip to secrete chemotropic stimulus.
Identify the $X$ and $Y$ from given diagram
Filiform apparatus is found in which part of angiosperms
Megasporangium is equivalent to
In which type whole of the megaspore mother cell takes part in the formation of the female gametophyte