Question

17. Cell wall of which one of these is not made up of
cellulose ?
(a) Bacteria
(b) Hydrilla
(c) Mango tree
(d) Cactus

• A. Bacteria
• B. Hydrilla
• C. Mango tree
• D. Cactus

Answer 1

The correct option is A

Bacteria

(A) Bacteria

Explanation of the correct option

(1) Bacteria shows cell wall around its cell membrane.

(2) The bacterial cell wall is made up of peptidoglycan.

Explanation of the incorrect option

(1) Hydrilla plant shows the presence of cellulosic cell wall surrounding its cell membrane.

(2) Mango tree is an angiosperm plant. It shows the presence of thick cellulosic cell wall.

(3) cactus is a xerophytic plant. It shows the presence of thick, cellulosic cell wall.

Concluding statement

Bacteria cell wall consists mainly of peptidoglycan, a mesh of polysaccharide strands.