Development of female gametophyte occurs inside the female reproduction organ i.e. gynoecium and the whole process of development can be studied under 2 heading are
1- Megasporogenesis - formation of megaspore
2- Megagametogenesis - formation of female gametophyte or embryosac
Gynoecium also known as pistil .
Gynoecium is the central whorl of a flower and represent female reproductive organ .
The individual unit of gynoecium is carpel which is also equivelent to megasporophyll .
The gynoecium may consist of a single carpel called monocarpellary or may have morethen one carpel called as multicarpellary .
When the carpels are fused together this condition is called syncarpous where as when these carpels are free this condition is known as apocarpous .
Each gynoecium consist of three parts namely
a- Stigma - It is a platform which receives pollen grain and present at the tip .
b- Style - It is a elongated tube like structure that connects stigma with ovary.
c- Ovary- It is the basal swellen portion of pistil .The ovary contain ovules in side the chambers or locules of ovarian cavity .
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