Stalk with which ovules remain attached to placenta is called
Funicle
Raphe
Hilum
Chalaza
$X$ - $MMC$ is a large cell containing dense cytoplasm and a prominent nucleus
$Y$ - Method of embryo sac formation from a single megaspore is termed monosporic
Embryo sac consists of
Ovule with funiculus lying close to micropyle is known as
$A$ : Eight cells of octant stage in dicot embryogeny are made by $2$ vertical and one transverse divisions in
embryonal cell.
$R$ : These cells are arranged in epibasal and hypobasal tier.