Cellulose is the chief constituent of

(A) cell wall
(B) cell membrane
(C) secondary wall of xylem
(D) body wall of insects

Correct Answer : cell wall
Explanation: In the primary (growing) plant cell wall, the major carbohydrates are cellulose, hemicelluloses and pectin. The cell wall in plants provides the most significant difference between plant cells and other eukaryotic cells. The cell wall is rigid and gives plant cells a much-defined shape.
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