The cell which undergoes meiosis is called meiocytes. Ploidy of meiocytes is always 2n. The diploid meiocytes divides into four genetically different haploid gametes during meiosis. Ophioglossum is a Pteridophyta having chromosome number 2n = 1260, Potato 2n = 48, Pisum sativum 2n = 14 and maize 2n = 20.