FORESTRY
PLANT AND WOOD ANATOMY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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counting the growth rings
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measuring the diameter
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counting the branches
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measuring the height
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Detailed explanation-1: -The age of the trees can be calculated by the number of annual rings. This method is called dendrochronology. Dendrochronology is the most useful technique to determine the appropriate age of samples.
Detailed explanation-2: -Start in the middle of the stump or cross-section of wood and count the first dark ring you see. Continue counting outwards from the middle ring until you reach the last dark ring. The total number of dark rings represents the age of the tree in years. (Don’t count the bark of the tree as a dark ring.
Detailed explanation-3: -The girth of a tree can be used to estimate its age, as roughly a tree will increase it’s girth by 2.5cm in a year. So, simply measure around the trunk of the tree (the girth) at about 1m from the ground. Make sure you measure to the nearest centimetre. Then divide the girth by 2.5 to give an age in years.
Detailed explanation-4: -As woody plants grow in diameter a new layer of wood is produced each year by the cambium. This layer is called as annual ring or growth ring. By counting the rings, the age of a tree can be determined. This use of tree-ring dating to find the age of a tree is also known as dendrochronology.