Question

Duramen is present in _______________.

• A. Inner region of secondary wood
• B. Part of sap wood
• C. Outer region of secondary ray
• D. Region of pericycle

Answer 1

The correct option is A Inner region of secondary wood

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 a dead element with highly lignified walls and is called heartwood or duramen. It is present in the inner region of secondary wood.

Thus, the correct answer is option A.