Question

Cells responsible for increase in diameter of the stem and root of dicot plants

Answer 1

The cells responsible for increase in diameter of the stem and root of dicot plants are the Cork Cambium and Vascular Cambium.

This is basically secondary growth where unlike the primary growth cell division takes place in the lateral mainstream or the cambia, leading to an increase in the width of the plant.

Answer 2

Cork Cambium and Vascular Cambium