The structure producing basidium is formed by the fusion of
 (A)two vegetative cells
 (B)two male gametes
 (C)two female gametes
 (D)male and female gametes

Hint The Basidiomycota incorporates mucks and rusts, which are significant plant microorganisms, and toadstools. Most edible growths have a place with the Phylum Basidiomycota; nonetheless, a few basidiomycetes produce fatal poisons.

Complete answer:
The basidium is the structure that bears the basidiospores found on the hymenophore of fruiting assemblages of Basidiomycetes. Structure delivering basidium is framed by the combination of two vegetative cells or substantial cells of various strains or genotypes karyogamy and meiosis happen in basidium creating four basidiospores.

Additional information:
The parasites in the Phylum Basidiomycota are effectively conspicuous under a light magnifying instrument by their club-formed fruiting bodies called basidia (particularly, basidium), which are the swollen terminal cell of a hypha. The basidia, which are the contraceptive organs of these parasites, are regularly contained inside the recognizable mushroom, generally found in fields after a downpour, on the market, and developing in your yard. These mushroom-creating basidiomycetes are here and there alluded to as "gill growths' ' as a result of the presence of gill-like structures on the underside of the cap. The "gills" are really compacted hyphae on which the basidia are born. This gathering likewise incorporates a rack organism, which sticks to the bark of trees like little retards.

So, the correct answer is ‘two vegetative cells’.

Note: For instance, Cryptococcus neoformans causes extreme respiratory illness. The life cycle of basidiomycetes incorporates a rotation of ages. Spores are commonly created through sexual propagation, as opposed to a biogenetic multiplication. The club-molded basidium conveys spores called basidiospores. In the basidium, cores of two diverse mating strains combine (karyogamy), offering to ascend to a diploid zygote that at that point goes through meiosis. The haploid cores move into basidiospores, which grow and produce monokaryotic hyphae.