The thin layer of sap between sap wood and inner bark is known as

The outer skin or cover of the tree is known as

The inner most central portion or core of the tree is called

In which season the sap is in vigorous motion and hence the felling of trees in these season should be avoided

The age for felling good trees

The cell impart to the strength to the wood

The process of removing moisture from newly felled tree is known as

The inner part of wood surrounding the pith is called

The timber which is mostly used for engineering purposes belongs to this category

It is also known as ever green trees