Practice question

Ascomycetes represent a very large and diverse class of fungi, ranging from unicellular yeasts to complex multicellular forms like Penicillium. The NCERT textbook notes that because their specific sexual spores (ascospores) are uniquely produced endogenously within tiny, microscopic sac-like structures called asci (singular: ascus), they are commonly and universally referred to as 'sac-fungi' in biological literature.