The minimum number of annular rings to be seen in every 2.54 cm i

SOLUTION

Concept:

Growth rings (or tree rings or annual rings):

• Each year in the growing season, the tree forms new cells arranged in concentric circles which are called growth rings or annual rings or annual. These annual rings show the amount of wood produced during one growing season.
• These rings can be seen in a horizontal cross section cut through the trunk of a tree. These results from the change in growth speed through the seasons of the year, thus one ring usually marks the passage of one year in the life of the tree.
• These annual rings furnish valuable information regarding the age of the wood, the rapidity and the uniformity of its growth.
• The minimum number of annular rings to be seen in every 2.54 cm in the radial direction from the core for timber to be classified as dense is 10. So, basically radial growth of 2.54 cm or less every 10 years for a tree would result in dense timber.