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Which will decay faster if exposed freel...

Which will decay faster if exposed freely

A

Sapwood

B

Soffwood

C

Wood with lot of fibres

D

Heartwood

Text Solution

Verified by Experts

The correct Answer is:
a
In old trees , secondary xylem or wood gets differentiation into outer light coloured functional sapwood or alburnum and inner dark coloures non- functional heartwood or duramen . Heartwood is stronger and highly durable because of presence of oils , resins , gums , tannins and tyloses which are plugged into the tracheids and vessel elements . As the secondary growth takes place size of heart wood increases because of concersion of inner alburnum (sapwood) into it.
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