Cells are divided into two groups based on the number of chromosomes.
1. Haploid cells: Cells which have haploid (n) number of chromosomes are called haploid cells. Haploid cells divide by the process of meiosis. These cells have half the number of chromosomes. For example, sperm and egg.
2. Diploid cells: Cells which have diploid (2n) number of chromosomes are called diploid cells. Diploid cells divide in the process of mitosis. Diploid cells have the same number of chromosomes. For example, root, stem, muscle, xylem, phloem etc.