Final answer:
A diploid organism has 14 chromosomes, while a tetraploid organism would have 56 chromosomes of the same species.
Step-by-step explanation:
A diploid organism has two sets of chromosomes. If an organism has a diploid chromosome number of 14, it means it has 14 chromosomes in each somatic cell. A tetraploid organism has four sets of chromosomes. Therefore, the tetraploid of the same species would have 56 chromosomes.