The male reproductive organ of a flower is called the stamen. The stamen is made up of two main parts: the anther and the filament. The anther is the part of the stamen that produces pollen, which contains the male reproductive cells called sperm. The filament is the stalk-like part that holds up the anther.
When a flower is pollinated, the pollen from the anther can travel to the female reproductive part of another flower, called the stigma, where it can fertilize the female reproductive cells called eggs. This process is how plants reproduce and create new seeds to grow into new plants.
In summary, the stamen is the male reproductive organ of a flower, and it consists of the anther and filament. The anther produces pollen containing sperm, which can fertilize the female reproductive cells and create new seeds.