Blooming flowers are part and parcel of the human experience, present in our churches, our homes and our yards. To that end, we have cultivated them and, in the process, changed them, so that their history is entwined with ours. In return they have provided food and comfort. We need them more than they need us, though. Flowers were here before us and would continue in our absence.
All blooming flowers, no matter appearances to the contrary, share the same four basic parts. Not all flowers contain all four parts, though, these flowers being logically called incomplete. Complete flowers, of course, boast all four parts, these being sepals, which protect the flower when it's in the bud stage; petals; stamens; pistils. The four parts also always occur in that order, from sepals to pistil, arranged in whorls or concentric circles. Such features make it easy to understand certain aspects of flowers, such as their reproductive traits.
The function of a blooming flower is sexual reproduction. To that end, flowers employ pollinators to transport pollen, which contains sperm, to flower parts that contain eggs. Naturally, the parts of a flower that produce sperm--stamens--are considered male, and the parts that hold the eggs--the pistils--are considered female. Once sperm fuses with egg, the flower creates a seed and fruit, fulfilling its function.
Blooming flowers, produced by plants called angiosperms, began emerging during the Cretaceous Period of the planet, over 100 million years ago. Thus, flowers shared the planet with dinosaurs and were present as humans emerged. Their attractiveness naturally drew us as well as bees, butterflies and other creatures. Indeed, blooming flowers have evolved over their history to be attractive, all the better to draw pollinators.
The most important benefit of blooming flowers lies in food: the flowers of angiosperms are the only way for the world to get fruit. Besides producing fruit--which includes what we call vegetables--the flowers themselves of many plants are edible. Squash flowers can be eaten, for instance, as can violet, pansy and rose petals. Such flowers have use as perfuming agents, also. Some are employed as medicine. The novice interested in ingesting flowers outright or as a tea should beware, though, for some flowers are poisonous.
Given the pleasure that blooming flowers provide, along with their importance to the survival of our species, it's natural that flowers have additional significance to various cultures. Flowers have served as symbols and emblems, for instance, as when the red and white roses of the English houses of Lancaster and York, respectively, were united as a symbol of the Tudors in the red-and-white Tudor rose. This kind of symbolism speaks volumes to those who get the reference. Indeed, floriography is a language where flowers instead of words are used as to communicate.