Anther is a male reproductive organ. It is part of the stamen, which is the male reproductive structure of a flower. The anther produces pollen, which is released into the air and can be carried by the wind or insects to the stigma of a female flower. The stigma is the female reproductive organ of a flower. When pollen lands on the stigma, it germinates and produces a pollen tube, which grows down the style to the ovary. The ovary contains the ovules, which are the female gametes. The pollen tube fertilizes the ovules, which develop into seeds.