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UPSC Prelims 1983 · World Geography · Countries, Rivers and Resources
Age of tree can be estimated by
- (a) Counting the number of concentric rings
- (b) Counting the nodes and internodes of the trunk
- (c) Measuring the girth of the tree trunk
- (d) Counting the number of branches
Show the answer and explanation
Answer: (a) Counting the number of concentric rings
Each annual growth ring marks one year (dendrochronology).
Why the others are wrong
(c) Girth varies with conditions.
The trap
None.
🔒 Dendrochronology — tree rings date past climates.
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