Plants reproduce in nature through a process called pollination. Pollination occurs when pollen (male reproductive cells) from a flower's stamen is transferred to the stigma (female reproductive part) of the same or another flower. This can happen through various methods such as wind, insects, birds, or other animals. Once the pollen reaches the stigma, it travels down the style to the ovary where fertilization takes place, leading to the formation of seeds. These seeds can then be dispersed by animals, wind, or water, allowing new plants to grow in different locations.