Which reproductive part of a flower is responsible for producing pollen grains?

The stamen is the male reproductive part of a flower responsible for producing pollen grains. It typically consists of two main components: the anther and the filament. The anther is the part that specifically contains the pollen sacs where pollen grains develop. During the process of pollination, these grains are released from the anther and can be transferred to the female reproductive structures for fertilization.

In contrast, the ovary, which is part of the pistil, contains ovules that develop into seeds after fertilization occurs. The pistil is the female reproductive part of the flower, while the receptacle is the thickened part of the stem where the flower organs are attached, but it does not play a direct role in pollen production. Understanding these distinctions is crucial for grasping the overall reproductive process in flowering plants.