In sexual reproduction, what type of cell(s), haploid or diploid, do these organisms have ?

During sexual reproduction, specialized haploid cells from two individuals join to form a diploid zygote. ... The haploid multicellular plants are called gametophytes because they produce gametes. Meiosis is not involved in the production of gametes in this case, as the organism that produces gametes is already haploid.

explanation:

for  example, forests have higher evapotranspiration than other ecosystems,  such  as grasslands, because of their deeper roots and greater leaf area. thus forests have a net moistening effect on the atmosphere and become a moisture source for downwind ecosystems.