Q. When cut horizontally both spring and autumn wood appear in concentric rings known as
A) Heartwood
B) Latewood
C) Sapwood
D) Annual ring
Explanation
The spring wood is lighter in colour and has a lower density whereas the autumn wood is darker and has higher density. The two kinds of woods that appear as alternate concentric rings, constitutes an annual ring. Annual rings seen in a cutted stem give an estimate of the age of the tree
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.