For what purpose do multicellular organisms use mitosis?

Multicellular organisms utilize mitosis primarily for the purpose of growth and repairing damaged cells. Mitosis is a vital process of cell division that results in two genetically identical daughter cells from a single parent cell, ensuring that the genetic material is preserved within the organism.

As organisms develop, they increase in size by producing more cells through mitosis. Additionally, when tissues become damaged due to injury or wear and tear, mitosis allows for the replacement of these cells to maintain function and health. This ability to regenerate and replace cells is key to the overall survival and adaptability of multicellular organisms.

In contrast, creating genetic variation is primarily associated with meiosis, while energy production occurs in cellular respiration rather than through cell division. Similarly, movement is facilitated by muscle contractions and other mechanisms rather than being directly tied to the process of mitosis itself. Thus, the fundamental role of mitosis in multicellular organisms is indeed linked to growth and the repair of damage, making it essential for maintaining the organism's integrity and function.