In a particular group of fungi, asexual spores are produced exogenously on special mycelia, while sexual spores are produced endogenously in sac-like structures. Identify the fungal class and its correct set of examples.

Step-by-step solution

The description states that asexual spores are produced exogenously (conidia on conidiophores) and sexual spores are produced endogenously in sac-like structures (ascospores in asci). These are the defining features of the class Ascomycetes (sac fungi). Aspergillus, Claviceps, and Neurospora are all correct examples of Ascomycetes. Basidiomycetes typically lack asexual spores and produce sexual spores exogenously on basidia. Phycomycetes produce asexual spores endogenously in sporangia. Alternaria and Trichoderma b