Generally number of integuments in the ovule of angiosperms and gymnosperms is

In angiosperms embryosac is developed from

Choose correct sentences

$(i)$ The gynoecium represents the female reproductive part of the flower

$(ii)$ Ovule is located in Anther

$(iii)$ Each pistil has three parts the stigma, style, and ovary

$(iv)$ The upper most part of gynoecium is Anther

$A$ : Anatropous ovule is resupinate ovule.
$R$ : The body of ovule is completely bent with hilum close to micropylar end.

Secondary nucleus in the middle of an embryo sac of angiosperms is

In given figure, labeled part $X$ is formed by....