Mitosis plays a crucial role in growth and development by enabling cellular division. This process allows for the formation of new cells, contributing to tissue growth, repair, and overall organismal development. It ensures that each daughter cell receives an identical set of chromosomes, maintaining genetic stability. In multicellular organisms, mitosis is vital for various functions, such as embryonic development and tissue regeneration. Without mitosis, organisms would struggle to grow, heal from injuries, or replace dead cells, highlighting its importance in maintaining life.