(d) : The Cyathus is known as bird's nest fungi, and Lycoperdon is called puff balls. Both thesefungi belong to the group of club fungi or basidiomycetes. These fungi produce spores inside club shaped fruit bodies called basidium. Typically basidium has 4 basidiospores produced exogenously. Peziza and Morchella, Claviceps belong to ascomycetes (produce ascospores in ascocarps). Mushroom are basidiomycetes fungi.