Trees continue to increase in height or girth over a period of time.
The leaves, flowers and fruits of the same tree not only have limited dimensions but also appear and fall periodically and repeatedly.
Development is the sum of two processes: growth and differentiation.
During the processesof growth, a complex body organisation is formed that produces roots, leaves, branches, flowers, fruits, and seeds, and eventually they die.
The factors which govern and control the process of development are both internal and external.
