True or False: Heartwood generally has a greater resistance to insect attack and decay than sapwood.

Heartwood is typically more resistant to insect attack and decay compared to sapwood. This is due to its composition and density; heartwood consists of older, non-living cells that have undergone changes making them less susceptible to degradation from insects and fungi. In contrast, sapwood is the younger, living part of the tree that transports water and nutrients. This portion contains more moisture and nutrients, making it more appealing to pests and more vulnerable to decay.

Heartwood is naturally fortified with various chemicals, such as tannins and other extractives, which enhance its durability and resistance. Different species of trees may exhibit varying levels of heartwood durability, but in general, heartwood provides superior protection against infestations and decay compared to sapwood. This fundamental understanding is crucial when considering the treatment and preservation of wood in structures, especially in termite management practices.