Embryo Sac - Female Gametophyte भ्रूणकोष - मादा गैमेटोफाइट - मादा युग्मकोद्भिद
Channel: Biologyhub Prakashsir AP
Date: 05/05/2021

Embryo Sac - Female Gametophyte भ्रूणकोष - मादा गैमेटोफाइट - मादा युग्मकोद्भिद
Embryo Sac  is also known as Female Gametophyte. Embryo Sac is also known as Female Gametophyte. It is seven cells and Eight Nuclei form makes from megaspore. Functional megaspore represents the first cell of embryo sac or female Gametophyte.
• Mostly chalazal and grows along the micropylar – chalazal axis.
• The nucleus undergoes three mitotic divisions and form eight nuclei.
• These nuclei are recognized, one nucleus from each group at a pole migrates to the centre of cell is called Polar or Central nuclei.
• The three nuclei left at the chalazal end are surrounded by walls and from Antipodals.
• The three nuclei located at the micropyler end constitute the Egg apparatus, One serve as egg or female gamete and the other two as synergids.
• The whole structure with two polar nuclei in one central cell, three nuclei in three Antipodal cells, one nuclei in one Egg cell or Oosphere and  two nuclei in two Synergids cells.
TYPE OF EMBRYO SAC (FEMALE GAMETOPHYTE)  
1. Monosporic embryo sac
 2. Bisporic embryo sac 
3. Tetrasporic embryo sac
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