This animation represents the sexual reproduction of a flowering plant (Angiosperm): the apple tree (Malus pumila).

It illustrates the formation of the male and female gametes in the reproductive organs of the flower. It is comprised of the formation of pollen grains in the anthers and the embryonic sacs in the ovules.

Also, because of the pollination, the meeting of male and female gametes is produced: this is the double fertilization that gives rise to the seed.