Describe organs/parts of a typical flower

Explanation

A typical flower possesses organs of four groups. In which two groups of outer side are sterile and two groups of inside are fertile organs.
Sterile organs: In sterile organs, sepals unite and make calyx.
Fertile organs: In two types of fertile organs stamens (microspores) unite and form Androecium and carpels (megaspores) unite and form cynoecium.
Stamen: Stamen is a thin organ and has three clear parts like proximal sterile.It is called filament and terminal fertile parts is called another. The part connecting anther and filament is called connective

Pistil/Carpel: The proximal part of end/ of pistil, consisting ovules is called ovary and terminal end accepting pollen grains is called stigma and the sterile part between ovary and stigma is called style.