Which component is part of the reproductive structure of a flower that produces gametes?

The stamen is the male reproductive part of a flower, consisting of two main components: the anther and the filament. The anther is the structure that produces pollen grains, which contain the male gametes (sperm cells) necessary for fertilization. When pollination occurs, pollen can fertilize the ovules present in the female part of the flower, leading to the formation of seeds.

In contrast, the pistil is the female reproductive part and consists of the stigma, style, and ovary, with the ovary containing the ovules that produce female gametes. The filament, while part of the stamen, primarily serves as a support structure for the anther and does not directly produce gametes. The ovary is involved in the reproductive process as well but mainly acts as the site where fertilization occurs and where seeds develop rather than being the source of gametes themselves. Thus, the stamen is the correct answer as it explicitly involves the production of male gametes, making it a key component of the flower's reproductive structure.