Here's a breakdown:

* Diploid cell: A cell with two sets of chromosomes (one set from each parent).

* Haploid cell: A cell with only one set of chromosomes.

* Gametes: Sex cells, like sperm and egg cells.

Why is this important?

Meiosis is essential for sexual reproduction. By creating haploid gametes, the process ensures that when two gametes fuse during fertilization, the resulting offspring will have the correct number of chromosomes (one set from each parent). This maintains genetic diversity and helps prevent genetic defects.