Final answer:
A haploid gamete from one species that hybridizes with a diploid gamete from a different species results in a triploid individual, with three sets of chromosomes.
Step-by-step explanation:
The type of organism resulting from the hybridization of a haploid gamete from one species with a diploid gamete from a different species is a triploid individual. This occurs when a gamete containing one set of chromosomes (haploid) fuses with a gamete containing two sets of chromosomes (diploid), resulting in an organism with three sets of chromosomes (triploid).
In the world of plants, the alternation of generations involves multicellular haploid and diploid stages. The haploid stage is known as gametophyte and is prevalent in some algae and many plants. This stage produces gametes through mitosis as the organism itself is haploid. On the other hand, the diploid stage, known as sporophyte, undergoes meiosis to produce haploid spores. These spores give rise to new gametophytes, completing the cycle. However, when cross-species hybridization occurs with gametes of differing ploidy, such as a haploid gamete mating with a diploid gamete, the resulting offspring has an atypical chromosome number, in this case, triploid.