Question

Heart wood is

• A. Outer part of secondary xylem
• B. Inner part of secondary xylem
• C. Outer part of secondary phloem
• D. Inner part of secondary phloem

Answer 1

The correct option is B Inner part of secondary xylem

The inner or central dark coloured non-functional wood or secondary xylem formed during secondary growth in dicot stem is called Heartwood or duramen.

So, the correct option is ‘Inner part of secondary xylem’.