Self-pollination is a process in which a flower's pollen fertilizes its own ovules. This can occur in plants that have both male and female reproductive structures, allowing them to produce seeds without needing pollen from another plant. Self-pollination can lead to the formation of seeds and fruits, ensuring the continuation of the plant species. Many plants, such as peas and tomatoes, are capable of self-pollination. This method can be advantageous in environments where pollinators, like bees, are scarce. However, it may also reduce genetic diversity, as the offspring are more likely to be similar to the parent plant.