Question
Biology Question on Anatomy of Dicotyledonous and Monocotyledonous Plants
Duramen is present in
A
inner region of secondary wood
B
part of sap wood
C
outer region of secondary wood
D
region of pericycle
Answer
inner region of secondary wood
Explanation
Solution
After certain years of growth, the xylem elements of the stems of a number of trees develop dark brown coloration, especially in the central or innermost layers. This region comprises dead element with highly lignified walls and is called heart wood or duramen. It is present in inner region of secondary wood.