What is heart wood?

What do heart wood and sap wood stand for ?

Why is heart wood dark in colour?

Why is heart wood dark in colour?

In which of the following there is no differntiation heart wood and sap wood-

In the following how the sap wood is converted into heart wood

In the following how the sap wood is converted into heart wood

In the following how the sap wood is converted into heart wood

In the following how the sap wood is converted into heart wood

Which is not correct about heart wood?

Assertion (A) : Sap wood is vital to the plant but heart wood is not . Reason (R ) : When the heart wood of the tree is destroyed, no vital function of the plant is affected , when the sap wood is destroyed the plant will die, conduction of water is blocked.