<P> A megaspore mother cell, or megasporocyte, is a diploid cell in plants in which meiosis will occur, resulting in the production of four haploid megaspores . At least one of the spores develop into haploid female gametophytes (megagametophytes). The megaspore mother cell arises within the megasporangium tissue . </P> <P> In flowering plants the megasporangium is also called the nucellus, and the female gametophyte is sometimes called the embryo sac . </P>

One microspore mother cell gives rise to how many gametophytes