- A Cellulose
- B Chitin
- C Peptidoglycan
- D Pectin
Correct answer: B. Chitin
Explanation: Fungal cell walls are made of chitin and other polysaccharides, unlike plant cell walls which are made of cellulose.
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.