In diploid organisms, the cells contain two sets of chromosomes, one from each parent. If diploid corn cells have 20 chromosomes, this means they have 10 pairs of chromosomes.
Haploid cells, on the other hand, contain only one set of chromosomes. Therefore, in a haploid corn cell, there would be half the number of chromosomes found in a diploid cell.
So, a haploid corn cell would contain:
\[ \frac{20 \text{ chromosomes}}{2} = 10 \text{ chromosomes} \]
Thus, there would be 10 chromosomes found in a haploid corn cell.