Embryo sac consists of
One egg cell
Two synergids
Three antipodal and two polar nuclei
All of the above
In angiosperms, functional megaspore develops into
Female gametophyte of a typical dicot at the time of fertilization is
Tegmen develops from
$A$ : 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.