Give importance of cell division for growth in living organisms.

Explanation

All organisms, even the smallest or the largest start their life with the single cell (Zygote).
Zygote is produced by fertilization of male and female gametes which is a unicellular structure.
Due to constant cell division and differentiation of zygote, multicellular body structure is formed.
Growth and reproduction of cells are the characteristics and need of all living organisms.
All cells reproduce by dividing into two with each parental cell giving rise to two daughter cells each time they divide. These newly formed daughter cells can themselves grow and divide.
In other words cycles of growth and division allow a single cell to form a structure consisting of millions of cells.
The number of cell in an adult person is `10^(14)`