Here's why:
* Mitosis is for growth and repair: Mitosis is a process of cell division that produces two identical daughter cells from a single parent cell. In multicellular organisms, mitosis is used for growth, development, and repair.
* Single-celled organisms reproduce asexually: Single-celled organisms reproduce through various asexual methods like binary fission, budding, or fragmentation. These methods involve a parent cell dividing to produce new daughter cells, but they do not involve the complex stages of mitosis.
Example:
* A bacteria cell reproduces through binary fission, where the cell replicates its DNA and then divides into two identical daughter cells.
In summary:
Mitosis is a process used by multicellular organisms for growth and repair. Single-celled organisms reproduce asexually through other methods like binary fission.
