A) By degeneration of protoplast of living cells
B) Tylosis formation
C) By deposition of resins, oil, gums etc
D) All of these
Correct Answer: D
Solution :
By the deposition of resins, oils, gums etc in the xylem cell wall, formation of tylosis in xylem vessels and by degeneration of protoplast of living cell sap wood is converted into heart wood.You need to login to perform this action.
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