explain
the structure of female Gametophyte
Answers
Explanation:
Female gametophyte of Angiosperms is also called embryo sac. A typical female gametophyte is monosporic and Polygonum type. It has four nuclei at the micropylar end and four nuclei at the chalazal end. Three nuclei at the micropylar end organize into egg apparatus consisting of an egg cell and two synergids and one nucleus migrate towards the centre. It is called polar nucleus. Similarly, three nuclei at chalazal end organize into three antipodal cells and one polar nucleus migrates towards the centre. Thus a mature female gametophyte has egg apparatus, three antipodal cells and two polar nuclei.
Answer:
The female gametophyte develops within the ovule and generally consists of three antipodal cells, one central cell, two synergid cells, and one egg cell (Figures 1A and 1B). The female gametophyte is also commonly called the embryo sac or megagametophyte.