Question

A cut trunk shows 26 concentric rings of spring wood and autumn wood in alternate rows. The age of trunk would be

Answer 1

The age of the trunk wood is 13 years

Step-by-step explanation:

Comparison between spring wood and autumn wood.

Spring wood (More active)                     Autumn wood(Less active)

• Cell larger                                          Smaller

• Lumen (wide)                                    Narrow

• Thin                                                    Thick

• Less fibre                                           More fibre
• Less dense                                        Dense

Half of 26 concentric rings = 13

So each wood have 13, 13 concentric rings

Therefore,

In 1 year = 1 annual = Spring wood = 13

                                  Autumn wood = 13

Thus the age of the trunk wood is 13 years

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Differentiate between Autumn wood and spring wood?

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