The monoploid number (also called the gametic number) refers to the number of chromosomes in a haploid cell. A haploid cell has only one set of chromosomes.

Here's a breakdown:

* Haploid: A cell with a single set of chromosomes.

* Diploid: A cell with two sets of chromosomes.

* Monoploid number: The number of chromosomes in a haploid cell.

Example:

* Humans have 23 pairs of chromosomes (46 chromosomes in total) in their diploid cells.

* Their monoploid number is 23, which is the number of chromosomes in their gametes (sperm and egg cells).

Key Points:

* The monoploid number is half the diploid number.

* It represents the basic set of chromosomes in a species.

* The term "monoploid" is less commonly used than "haploid".

Let me know if you have any other questions!