it is sperm.
NEW ANSWER
Ploidy refers to how many complete sets of chromosomes a cell has.
A diploid cell will have two sets of chromosomes, one set from each parent.
A haploid cell is a cell with only one set of chromosomes.
For example, humans are diploid organisms - our cells each have two copies of 23 different chromosomes for a total of 46. Humans do produce haploid sperm and egg cells (with only one set of chromosomes for a total of 23 chromosomes per cell) during meiosis for reproduction as these two haploid cells can then fuse to produce a diploid fertilized embryo.
However, not all haploid cells are sex cells for multicellular organisms. All prokaryotes (i.e. bacteria) are considered haploid because they have a single circular chromosome. Many organisms - plants, funghi, yeast - go through haploid and diploid stages of their life cycles. Some insects are haploid.