A) Gums
B) Resins
C) Tannins
D) Mucilages
Correct Answer: C
Solution :
[c] Heart wood is the central xylem of tree-trunks, which is frequently impregnated with tannins, resins, etc. It is considered to be an excretory product. An important tannin is obtained from the heart wood of Acacia catechu.You need to login to perform this action.
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