Write the events of development of female gametophyte in correct order.

Explanation

. The female gametophyte develops from a single megaspore and hence is decribed as monosporic development.
. The functionnal megaspore is the first cell of female gametophye of angiosperms.
. It enlarges to form the female gamestophyte , also called embryo sac.
. Its nucleus undergoes a mitotic division and the two nuclei move to the opposite poles , forming the 2- nucleate embryo sac.
. two successive mitotic divisions in each of these two nuclei result in the formation of a typical female gametophyte .
. Cell wall formation starts at the eight nuclues satge resulting in the formation of a typical female gametophyte .
. Three nucles are grouped together at the micropylar end to form the egg appaeratus consisting of two synergids and a female gamete ? egg cell by wall formation .
. TYhe remaaning two nuclei are called polar nuclei , thye move to the centre of the embryo sac and fuse to from a diploid secondary nucleus . The remaining three nuclei eggregate at the chalazal to form three antipodal cells .
. Thus a typicall angiosperm embryo sac is 8- nucleate and celled .