Explanation

$Claviceps$is a member of class-Ascomycetes. The Ascomycetes have a multicellular mycelium (except yeast) with septal pore and chitinous wall. The sexual reproduction produces dikaryophase $(n + n).$ Other examples are: $Saccharomyces,\ Penicillium,\ Aspergillus,\$ $Neurospora,\ Morchella$, etc