The option that is not a characterisitic of Fungi is B. Their cell walls consist mainly of cellulose.
Fungal cell walls contain Chitin, glucans and proteins, unlike plants their walls do not consists of cellulose its one of the fungal main characterisitcs.
Chitin is extruded by the plasma membrane and its the largest of components within the wall, it helps scientist to distinguish the fungies from other plants. Glucan, a type of polysaccharide, gives the wall rigidity and proteins resides in the funal cell walls as act as enzymesto synthesize more of the cell wall.
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