Five significance of mitosis are :
(a) Somatic cells are formed by mitosis. Therefore, mitosis is essential for growth.
(b) An overgrown somatic cell is induced to divide so that mitosis help in maintaining a proper surface/ volume ratio.
(c) It is the method of multiplication of unicellular organism.
(d) Mitosis produces multicellular condition.
(f) It is a mechanism for replacing old or worn out cells