The HEARTWOOD of a tree is:

Question

Accepted Answer

A. Dead, dark, central wood that gives mechanical support

HEARTWOOD = older, central, DEAD, darker wood.
It provides MECHANICAL SUPPORT but doesn't conduct water.
SAPWOOD (outer, lighter, alive) is the functional water-conducting xylem.
Heartwood is impregnated with resins, less prone to decay.

Answer

Living wood that conducts water and minerals

Answer

The outermost thin layer of the bark

Answer

The actively dividing layer of cells (cambium)

The HEARTWOOD of a tree is:

Keep practising Unit 7E: Plant Kingdom & Biological Classification