Question

Thickening of collenchyma is due to

• A. Lignin
• B. Pectin
• C. Suberin
• D. None of the above

Answer 1

The correct option is B Pectin

Collenchyma tissue is composed of elongated cells with irregularly thickened walls. They provide structural support, particularly in growing shoots and leaves. Collenchyma cells are usually living, and have only a thick primary cell wall made up of cellulose and pectin. Cell wall thickness is strongly affected by mechanical stress upon the plant.

So, the correct answer is option B.