Question

Walls of collenchymas are irregularly thickened due to the deposition of 

A. pectin 

B. lignin 

C. suberin 

D. All of the above

Answer 1

Walls of collenchymas are irregularly thickened due to the deposition of pectin. Lignin is present in the walls of sclerenchymatous tissue. Suberin is present in the cork cells. Lignin and suberin are present in dead components while pectin forms the component of collenchymas which is a living part.