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Secondary Growth

Question

Age of a tree can be estimated by

Easy

A

number of annual rings
B

diameter of its heart wood
C

its height and girth
D

biomass

Solution

The spring wood is lighter in colour and has a lower density whereas the autumn wood is darker and has a higher density. The two kinds of woods that appear as alternate concentric rings, constitute an annual ring. Annual rings seen in a cut stem give an estimate of the age of the tree.

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