Cell wall of which one of these is not made up of cellulose?
(a) Bacteria
(b) Hydrilla
(c) Mango tree
(d) Cactus
Answer : (a)
Cellulose is a polysaccharide (long chain of sugars or complex sugar) which is found in the cell wall of plants which gives rigidity and protects the cell. So, in the above options; hydrilla, mango tree, cactus belong to plant but bacteria does not. Bacteria cell wall is made up of peptidoglycan which is also a polysaccharide.
Therefore, option (a) is correct.