Question

Sometimes nucellar cell surrounding the embryo sac starts dividing, protrudes into embryo sac and develops into embryo i

Answer 1

During megasporogenesis, diploid megaspore mother cells undergo meiosis and give rise to haploid megaspores, which then, during megagametogenesis, develop into haploid female gametophytes. ... The female gametophyte is also commonly called the embryo sac or megagametophyte