AP BIOLOGY

Detailed explanation-1: -sapwood, also called alburnum, outer, living layers of the secondary wood of trees, which engage in transport of water and minerals to the crown of the tree. The cells therefore contain more water and lack the deposits of darkly staining chemical substances commonly found in heartwood .

Detailed explanation-2: -Parts of a Tree Sapwood: Xylem cells that are still conducting water (sap) from the roots to the top of the tree. Heartwood: Xylem cells that are compacted and no longer conducting sap. These cells are often filled with resins that harden them and make them resistant to breakdown.

Detailed explanation-3: -Sapwood is the living, outermost portion of a woody stem or branch, while the heartwood is the dead, inner wood, which often comprises the majority of a stems cross-section. Sapwood is usually lighter in color than heartwood.

Detailed explanation-4: -Sapwood is living tissue in the tree, though it may contain a large number of dead cells. In fact, only 10 percent of the cells in sapwood are living. It is composed of xylem vascular tissue that transports the water and minerals throughout the plant’s structure.

Detailed explanation-5: -Sapwood (Xylem): The scientific name for sapwood is xylem. It is made up of a network of living cells that bring water and nutrients up from the roots to the branches, twigs and leaves. It is the youngest wood of the tree–over the years, the inner layers of sapwood die and become heartwood.