mitosis is when BODY cells reproduce, and meiosis is when SEX cells reproduce.
Pretty much the nitty gritty.
Mitosis: duplication of the chromosomes. in order to separate and multiply.
(from Wikipedia: Mitosis is the process by which a cell duplicates the chromosomes in its cell nucleus, in order to generate two, identical, daughter nuclei. It is generally followed immediately by cytokinesis, which divides the nuclei, cytoplasm, organelles and cell membrane into two daughter cells containing roughly equal shares of these cellular components. Mitosis and cytokinesis together define the mitotic (M) phase of the cell cycle, the division of the mother cell into two daughter cells, each with the genetic equivalent of the parent cell.)
Meiosis: where the cell splits, and needs another cell from the opposite sex to make it whole again.
(this is our method of reproductrion!)
(from wikipedia:In biology, meiosis (pronounced my-oh-sis) is the process by which one diploid eukaryotic cell divides to generate four haploid cells often called gametes. The word "meiosis" comes from the Greek meioun, meaning "to make smaller," since it results in a reduction in chromosome number in the gamete cell.)