Q20 / 180 · NEET 2013 (All India) · Botany

Age of a tree can be estimated by

A
its height and girth
B
biomass
Correct answer
C
number of annual rings
D
diameter of its heartwood

Solution

Age of tree can be estimated by number of annual rings. The two kinds of woods that appear as alternate concentric rings, constitute an annual ring heartwood comprises dead elements with highly lignified walls that give mechanical support to the stem. The height and girth of a tree increases due to the activity of vascular cambium.

Hence, the correct answer is option: 'C'.

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