Cup fungi belong to the order Pezizales in the Ascomycota phylum, known for their distinctive cup-shaped fruiting bodies called apothecia. This SEO-optimized article solves the MCQ on ‘Cup fungi’ classification, explains each option, and provides key insights for biology students.

Correct Answer

Cup fungi are members of the order Pezizales. These ascomycetes produce open, disk- or cup-shaped apothecia with asci on the upper surface for spore dispersal, often via rain splashes or wind.

Option Explanations

• Sphaeriales: Incorrect. Now largely reclassified as Sordariales or related orders, these produce perithecia (flask-shaped ascocarps), not open cups; examples include plant pathogens like Gibberella.​

• Erysiphales: Incorrect. This order includes powdery mildews with haustorial parasitism on plants and cleistothecial fruiting bodies (closed asci sacs), lacking cup shapes.​

• Pezizales: Correct. Contains most cup fungi (e.g., Pezizaceae family) with exposed apothecia; saprobic or mycorrhizal, releasing spores in puffs when disturbed.

• Ustilaginales: Incorrect. Smut fungi in Basidiomycota, forming galls and powdery teliospores on plants (e.g., corn smut); not ascomycetes or cup-forming.​

Cup Fungi Characteristics

Cup fungi feature fleshy, apothecium fruiting bodies (0.5 cm to 10 cm) in colors like red, yellow, or brown, mostly saprobic on wood or soil. Asci line the fertile upper surface, maturing to eject spores; some are edible or plant pathogens like Monilinia.

Classification and Importance

Primarily in Pezizomycetes class (Pezizales order), cup fungi aid decomposition and nutrient cycling. For life sciences exams, note their distinction from perithecial or cleistothecial ascomycetes; useful in mycology studies for molecular biology and ecology.