Formation of embryo sac directly from megaspore mother
cell in angiosperms is called
At least one of the spores develop into haploid female gametophytes (megagametophytes). The?megaspore mother cell?arises within the megasporangium tissue. In?flowering plants?the megasporangium is alsocalled?the nucellus, and the female gametophyte is sometimes?called?theembryo sac.