What role does the stigma play in a flower?

The stigma plays a crucial role in the reproductive process of flowering plants by serving as the receptive surface for pollen. When pollen from the male part of a flower (the anther) lands on the stigma, it can germinate and grow down the style towards the ovary, where fertilization occurs. This process is essential for the production of seeds and the continuation of plant species. The structure of the stigma is often sticky or feathery, ensuring that it effectively captures pollen grains. Understanding this role is fundamental in the study of plant reproduction and the overall life cycle of flowering plants.