All flowers are variations on a simple, basic plan.
Some flowers grow in clusters, some bloom alone.
All flowers, however, have a protected ovary to contain the seeds, and stamens to produce the pollen. Flowers were developed by land plants. Showy petals and sweet nectar are often produced to lure insects to the blossoms. Insects carry the pollen from flower to flower, ensuring exchange of the information encoded in the chromosomes. Flowers have a well-defined structure.