Question

Given below are assertion and reason. Point out if both true with reason being correct explanation (A), both true but reason not correct explanation (B), assertion true but reason is wrong (C), both are wrong (D)
Assertion. Collenchyma is thick walled tissue.
Reason. Collenchyma is thickened due to deposition of pectin.

• A. A
• B. B
• C. C
• D. D

Answer 1

Answer: (A)

A

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 'A.'