Q. What is/are true about heartwood? I.It does not help in water conduction. II.It is also called alburnum. III.It is dark in colour but very soft. IV.It has tracheary elements, which are filled with tannin, resin, etc.
A) II, III and IV
B) I and IV
C) II and IV
D) I, II and III
Explanation
Heartwood is also called duramen. It represents the central wood of the plant. It is dark in colour and heavier in weight. Living cells are absent. It represents non-functional part of the secondary xylem (wood).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.