Read the following statements w.r.t. Basidiomycetes : (i) Sex organs are commonly present (ii) Plasmogamy is brought about by fusion of two vegetative or somatic cells of different strains or genotypes (iii) The diakaryotic structure may give rise to basidium (iv) Karyogamy and meiosis take place in the basidium producing four ascospores (v) The basidiospores are exogeneously produced on the basidiumHow many of the above statements are correct?