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Taking a crossection of a tree trunk, since trees grow progressively in concentic rings added to the outside, that part of the wood nearest the centre is the oldest. It is close grained and, because it is in the middle, is called heart wood.

The sap wood is the outer, newer layers which are of more open grain and softer.

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14y ago
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12y ago

Heart is older inner wood.

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Q: Explain the structure of heart wood and sap wood?
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Related questions

What is sap wood?

outer part from heart wood to outer rings is called sap wood and it is very soft not as much stronger


What is wood sap?

outer part from heart wood to outer rings is called sap wood and it is very soft not as much stronger


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