Answer:
Haploid: Haploid is the quality of a cell or organism having a single set of chromosomes. A haploid cell only has one set of chromosomes, and most of the time that refers to the sex cells, either eggs or sperm.
Diploid: Most animal cells and plant cells are diploid. The reason they're diploid is because they got one chromosome from their mother and one chromosome from their father. "Di" means two, of course.
Step-by-step explanation:
There is a critical transition from a diploid cell to a haploid cell to allow normal reproduction to occur, so that when these two haploid cells come together with a single set of genetic information, they can come together into a zygote (made of when the egg cell and the sperm cell come together) that then reconstitutes a diploid cell, which can then become a new individual.
I don't know much about biology and stuff, but I hope the notes from my notebook help. Good luck!