The female gametophyte located within the nucellus is called as Embryo Sac.
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It is an oval shaped structure present towards the micropylar end of the nucellus.
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It is an eight nucleated structure and seven celled structure.
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It consists of egg apparatus, secondary nucleus and antipodals.
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Egg apparatus is a group of 3 haploid cells. It is present towards micropylar end. The middle cell is called an egg and two lateral cells are called synergids.
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Secondary nucleus: Two polar nuclei fused at the centre of an embryo sac to form secondary nucleus.
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Antipodals: A group of 3 haploid cells present towards the chalazal end.
