A cell that contains one member of each chromosome pair is called a haploid cell.

Here's why:

* Haploid refers to the number of chromosomes in a cell.

* Diploid cells have two sets of chromosomes (one from each parent).

* Haploid cells have only one set of chromosomes.

Examples of haploid cells:

* Gametes (sperm and egg cells): These cells are produced through meiosis, a process that reduces the number of chromosomes by half.

* Some fungal and plant cells: In some organisms, haploid cells can be a part of their normal life cycle.

Let me know if you have any other questions!