After karyogamy followed by meiosis, spores are produced exogenously in
Neurospora
Alternaria
Saccharomyces
Agaricus
Correct answer: Agaricus
Solution
In Agaricus, the sexual reproductive structure is a basidium. After karyogamy and meiosis, basidiospores are produced exogenously on the outside of the basidium. This is characteristic of basidiomycetes.