Which material provides the mechanical support to cells of trachea?
A
Prothrombin
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B
Cellulose
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C
Lignin
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D
Pectin
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Solution
The correct option is C Cellulose The cells that make up the trachea of the xylem are thick walled and consist of two layers called primary wall and secondary wall. Cellulose is deposited into the primary wall and provides mechanical support to cells.