what type of cell division is used to replace old cells?

The type of cell division used to replace old cells is mitosis. Mitosis is a process where a eukaryotic cell divides to produce two genetically identical daughter cells, each with the same number of chromosomes as the original cell. This type of cell division is essential for growth, repair, and the replacement of old or damaged cells in multicellular organisms. Through mitosis, new cells are created to maintain the function and integrity of tissues by replacing worn-out cells.