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Tamil Nadu Board of Secondary EducationHSC Science Class 11

When you go to a timber mart to collect timber for your construction of a new house, how will you select good timber? - Botany

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Question

When you go to a timber mart to collect timber for your construction of a new house, how will you select good timber?

Answer in Brief

Solution

(i) Timber is mainly used for carpentry and buiding houses. In order to enrich the quality of timber, seasoning of wood is done.
(ii) Timber is the most important tissue that sequestrates atmospheric carbon and this reduces global warming.
(iii) In order to enrich the quality of timber, seasoning of wood is done through air and kiln drying. Wood is characterized by colour, grain, texture and figure.
(iv) We must check the wood whether the wood has been gone through the seasoning.
Also The wood is also classified into sap wood (pale in colour ) and heart wood (dark in colour ). The timber from the heartwood is more durable and more resistant to the timber from sap wood. So, I will select the heart wood which has been gone through the seasoinng of wood for my construction of new house.

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Chapter 10: Secondary Growth - Evaluation [Page 60]

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Samacheer Kalvi Botany [English] Class 11 TN Board
Chapter 10 Secondary Growth
Evaluation | Q 19. | Page 60
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