Final answer:
The pollen lands on the stigma of a flower, a sticky part of the pistil designed to capture pollen grains for fertilization.
Step-by-step explanation:
The pollen lands on the stigma of a flower, which is a part of the pistil, the female reproductive structure. The pistil consists of three parts: the stigma, style, and ovary. The stigma is specifically designed to be sticky to capture pollen grains. When a pollinator, such as a bee or a bird, visits a flower, pollen grains are transferred from the anther.
The male part of the flower, to the stigma of the same or a different flower. Upon landing on the stigma, pollen grains adhere and begin the process of germination, growing a pollen tube through the style and towards the ovary, where fertilization can occur.
The cooperation between the male and female parts of a flower ensures that the plant can reproduce sexually. The male part, called the stamen, consists of a filament and an anther where the pollen is produced. The female part, the pistil, provides the site for pollen germination and the path to the ovule for subsequent fertilization.