Final answer:
The three functions of mitosis include asexual reproduction, growth and development, and repairing damaged cells, which are essential in maintaining an organism's health and facilitating tissue repair and regeneration.
Step-by-step explanation:
The three functions of mitosis are asexual reproduction, growth and development, and to repair damaged cells. During asexual reproduction, a single organism can reproduce without the need for combining genetic material with another individual.
Mitosis enables an organism to grow and develop by increasing the number of cells and allows for the replacement of damaged or dead cells with new ones. This is critical for maintaining the health and function of an organism's body. Cells produced by mitosis will function in different parts of the body, contributing to the organism's development and overall growth.
This process is also essential in vegetative propagation in plants, where new plants can grow from certain parts of the parent plant solely through mitosis. In addition, mitosis is integral to cell cycle and division, which produces two genetically identical cells from a single original cell, playing a key role in tissue repair and regeneration.