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6.Anatomy of Flowering Plants
normal
Duramen is present in
A
Inner region of secondary wood
B
Part of sapwood
C
Outer region of secondary wood
D
Region of pericycle
Solution
After certain years of growth, the xylem elements of the stems of a number of trees develop dark brown colouration, especially in the central or innermost layers. This region comprises dead element with highly lignified walls and is called heartwood or duramen. It is present in inner region of secondary wood.
Standard 11
Biology
