The stamen is the male reproductive structure of the plant that helps produce pollen for reproduction. It is made up of two parts the anther and the filament. The anther is composed of pollen sacs and produces the pollen. The filament is the stalk that holds up the pollen. In the picture you can see that the anther (that has the pollen) is being held up by the filament. When the pollen is ready, the anther will open and the pollen will be carried by wind, water, or animals to the stigma of another plant. This is how fertilization will happen and that is why the stamen plays an important roll in a plant’s life.