Explain development in detail.

(N/A) Development $=$ Growth $+$ Differentiation.
It is essential to understand that the development of a mature plant from a zygote (fertilised egg) follows a precise and highly ordered succession of events.
During this process,a complex body organization is formed that produces roots,leaves,branches,flowers,fruits,and seeds,and eventually,the plant dies.
Developmental processes are controlled and governed by certain factors.
These factors are both intrinsic (internal) and extrinsic (external) to the plant.