Flowers, for example, have both male and female reproductive organs. The male organ, called the stamen produces pollen which, through pollination , gets moved and attached to the sticky pistil . The pollen then grows down into the pistil until it reaches the ovary which houses and protects the ovule . Once the male pollen cells join with female cells, fertilization occurs. The fertilized embryo grows into a seed that can grow into a new plant.
Many flowers require cross-pollination.
The pollen from the stamen of one blossom is intended to fertilize the ovule of another blossom. If two tulips are growing side by side, the pollen from the first tulip should attach to the pistil of the second tulip. Most often the wind or insects transport the pollen from flower to flower. The bee is the best equipped agent of fertilization for the flower. As the bee flies away, it touches the stamen, picks up some pollen, and carries it to another flower's pistil.