The Insects Carry Pollen
Now, the bees in coming to get this feast of good things to eat—the nectar for honey, and the pollen for bee-flour, both of which are very necessary for bees—do just exactly what the flowers want them to do above everything—to carry pollen from some anthers to the pistil. This they do without knowing what a great kindness they are bestowing upon the flowers.
They think they are just doing their duty in gathering nectar to make honey and pollen for bee-flour, but in dipping their heads down into the deep calyx where the nectar is stored, they get their furry bodies covered with pollen, and when they come out of that flower, or go to visit another, they spread pollen all over the stigma of the pistil! And when the pollen is spread on the stigma of the pistil, somehow, in some wonderful way it sinks down through the style into the ovary where the dear little seed baby is born.
If you cut open an old bloom going to seed you will see a number of seed babies in the ovary from which they will fall when they are ripe.