FORESTRY
PLANT AND WOOD ANATOMY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Heartwood is characterized by all, except
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Presence of tyloses
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Presence of tannins, resins, oils, gums etc.
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Its commercial importance for timber
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Active in water conduction
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Explanation:
Detailed explanation-1: -heartwood, also called duramen, dead, central wood of trees. Its 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.
Detailed explanation-2: -Hardwood provides mechanical support and does not conduct water.
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