Flowers are where flowering plants make seeds. The stamen is the male part: its anther makes powdery pollen. The carpel (pistil) is the female part: it has a sticky stigma on top and an ovary at the bottom containing ovules.
Pollination happens when pollen is carried from an anther to a stigma. Many plants are pollinated by animals such as bees, butterflies, birds and bats, which are attracted by colorful petals, scent and nectar. Other plants are pollinated by the wind.
After pollination, a tube grows from the pollen grain down to an ovule. Fertilization happens when the male and female cells join. The ovule then grows into a seed, and the ovary often grows into a fruit around it.