Question

9. What's the layer of material found at the innermost part of wood? A. Heartwood B. Vascular cambium C. Sapwood D. Cork cambium

Answer 1

It is heartwood. heartwood is made of older dead xylem cells, or cells that transport water throughout the trunk. The dead xylem cells get harder and form heartwood at the center of the tree.

Answer 2

(A.) Heartwood

Heartwood is the inner layer in wood