Answer: Ascomycetes.
- A Phycomycetes
- B Ascomycetes
- C Basidiomycetes
- D Deuteromycetes
Correct answer: B. Ascomycetes
Explanation: Saccharomyces (yeast) is a unicellular member of class Ascomycetes, the sac fungi that produce ascospores within an ascus.
Whittaker's five-kingdom system (1969) groups all cellular life by cell structure and nutrition; viruses, viroids, and lichens fall outside this system entirely since they aren't independently classifiable as one of the five.
Concept context
Whittaker's five kingdom system covering Monera, Protista, Fungi, plus viruses, viroids, and lichens. A foundational NEET chapter on how living organisms are grouped.