Increase in girth of a tree is due to the activity of
A) procambium.
B) ground meristem.
C) protoderm.
D) vascular cambium.
E) periderm.

Question

Quizplus · Accepted Answer

The increase in the girth of a tree is primarily due to the activity of the vascular cambium, which is a type of lateral meristem. The vascular cambium produces secondary xylem (wood) to the inside and secondary phloem to the outside, contributing to the thickening of the stem or trunk.

Increase in Girth of a Tree Is Due to the Activity