The photograph below shows the flower of a Japanese anemone.
The next photo shows a close-up of the reproductive parts of the same flower.
The Japanese anemone makes simple flowers (as opposed to composite flowers, which we'll think about another time).
A simple flower has sexual organs in the middle of the flower, and petals or bracts round the outside edge. The female organs are in the centre and the male organs are in a ring around the female organs. When it's time for pollination to happen, pollen from the male organs is taken by insects, the wind, or other vectors, and lands on the female organs of the same or a different flower.