In a Dicot Stem, What is the Ring of Cells

Question

In a dicot stem, what is the ring of cells that includes the xylem?
A) apical meristem
B) vascular cambium
C) cork cambium
D) epidermal tissue

Accepted Answer

The vascular cambium is the ring of cells that includes the xylem in a dicot stem. The vascular cambium is a lateral meristem that produces secondary growth in the stem, causing it to increase in width. The apical meristem is found at the tip of the stem and is responsible for primary growth, which causes the stem to increase in length. The cork cambium is another lateral meristem located in the outer cortex of the stem and produces the cork layer, which protects the stem. Epidermal tissue is the outermost layer of the stem that protects the plant and helps with gas exchange.