How does a cell multiply?

A cell multiplies by cell division. In this process, new cells are formed from pre-existing cells. In mitosis, one parent cell divides to form two genetically identical daughter cells with the same number of chromosomes. Mitosis helps in growth, repair and replacement of old or damaged cells. In meiosis, cells in reproductive organs divide to form gametes with half the number of chromosomes. Thus, cell division allows organisms to grow, repair damaged tissues and reproduce.