Beautiful flower

The biological function of the flower is the sexual organ, as a container for the union of male and female gametes to produce seeds.
Some flowers have a bright color that serves as a lure of animals for pollination aids. Some other flowers produce a distinctive heat or aroma, also aiming at luring animals to help pollinate.
And the formation of flowers has long been a concern of people, because much of the economic value of cultivated plants depends on the formation of flowers. Flowers will not form before the network where it will appear has reached the stage of maturity (maturity) but not yet too old (senile).
In tree-shaped plants, newly formed or still developing tissue (juvenile) will be very difficult to form flowers.