Question

How do multicellular organisms grow?

Answer 1

The multicellular organisms are those organisms that have more than one cell in their body. Majority of the organisms are multicellular.

Complete answer:
1)The multicellular organisms grow through cell division. The definition of growth for multicellular organisms involves only cellular growth and not reproductive growth.
2)Cells are known as the basic structural and the functional unit of life of both unicellular and multicellular organisms. The cells in multicellular organisms together form the tissue and organs in those organisms.
3)The cell division in multicellular organisms is not only for the growth of these organisms but also for repairing injured cells and replacement of cells.
4)In unicellular organisms, the growth and reproduction are similar, the cell division occurs for the growth of organism as well it is also the method of how unicellular organisms reproduce but in the case of multicellular organisms the concept of cell division and reproduction are not similar but here cell division can lead to reproduction but cannot occur simultaneously. For example, budding in a unicellular organism is both growth and reproduction of unicellular organism but in a multicellular organism such as humans, the sex cells that are also known as gametes undergoes meiosis which is a cell division, and these gametes later fertilize to give offspring that is a reproduction.

Note: The examples of multicellular organisms are humans, fungi, plants, and some algae but some organisms are neither classified as unicellular or multicellular or they can be known as partially unicellular and partially multicellular, examples are slime molds, amoeba, etc.