Here's why:
* Haploid means "half" or "single".
* Chromosomes carry genes, which are the units of heredity.
* Diploid cells, like most of the cells in our bodies, have two sets of chromosomes (one from each parent).
* Haploid cells have only one set of chromosomes.
Examples of haploid cells include:
* Sperm cells and egg cells (gametes) in animals.
* Spores in plants and fungi.
These cells are involved in sexual reproduction, where they combine to form a diploid zygote.