Final answer:
The gynoecium consists of all the carpels in a flower, acting as the female reproductive structure encompassing the stigma, style, and ovary.
Step-by-step explanation:
The gynoecium consists of all the carpels of a flower. The gynoecium, sometimes referred to as the pistil, is the female reproductive component of a flower, which includes the stigma, style, and ovary. The stigma is the part where pollen is deposited. Pollen grains develop from the microspores in the anthers of the male reproductive parts, or stamens, and the stigma provides the area for these pollen grains to adhere. Pollen tubes grow through the style to reach the ovary, which contains one or more ovules. Each ovule has the potential to develop into a seed after fertilization occurs.