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Question
When tree grows older which of the following increase rapidly in thickness?
When tree grows older which of the following increase rapidly in thickness?
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Solution
The correct option is A It's heart wood
Heartwood, also called duramen are dead, central wood of trees. It's cells usually contain tannins or other substances, that make it dark in colour and sometimes aromatic. Heartwood is mechanically strong, resistant to decay and less easily penetrated by wood-preservative chemicals than other types of wood. One or more layers of living and functional sapwood cells are periodically converted to heartwood. When the trees gets older sap wood will get convert into heart wood. Thus, option A is correct.
Heartwood, also called duramen are dead, central wood of trees. It's cells usually contain tannins or other substances, that make it dark in colour and sometimes aromatic.
Heartwood is mechanically strong, resistant to decay and less easily penetrated by wood-preservative chemicals than other types of wood. One or more layers of living and functional sapwood cells are periodically converted to heartwood. When the trees gets older sap wood will get convert into heart wood. Thus, option A is correct.
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