Here's why:

* Diploid cells have two sets of chromosomes.

* Mitosis is a type of cell division that creates two identical daughter cells from a single parent cell. The parent cell replicates its chromosomes, ensuring that each daughter cell receives a full set of chromosomes.

* Haploid cells have only one set of chromosomes. They are produced through a different type of cell division called meiosis.

Let me know if you have any other questions!