A) Bark only
B) Heart wood only
C) Sap wood and bark
D) Heart wood and bark
Correct Answer: B
Solution :
[b] Heart wood is the dark coloured, broad zone of the plant wood. As a stem grows older, its heart wood increases in thickness. The heart wood gets infiltrated with gums, tannins, resins, dyes, etc., e.g. catechu found from 'Acacia catechu, red brazilin from Caesalpinia sappan etc.You need to login to perform this action.
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