Question:

The age of a felled tree can be determined only if the stump shows distinct ______________.

Show Hint

Growth rings consist of 'Earlywood' (spring) and 'Latewood' (summer/autumn). One pair equals one year of growth.
  • False rings
  • Closed formed rings
  • Annual rings
  • Absence of growth ring
Show Solution
collegedunia
Verified By Collegedunia

The Correct Option is C

Solution and Explanation

Step 1: Understanding the Question:
This question relates to Dendrochronology, the science of determining the age of trees and past environmental events by analyzing growth rings.

Step 2: Detailed Explanation:


• In temperate regions and some tropical regions with distinct dry/wet seasons, trees produce a new layer of wood every year.

• This creates visible "Annual rings" in the cross-section of the stump. By counting these rings from the pith to the bark, the age of the tree can be precisely determined.

• False rings (A) are caused by mid-season stress (like drought) and can lead to overestimation of age.

• Many tropical trees do not show distinct annual rings due to the lack of seasonal variation in climate, making it difficult to determine their age through ring counting.

• Therefore, the presence of distinct, well-defined annual rings is a prerequisite for age determination.

Step 4: Final Answer:

The age is determined by counting distinct Annual rings.
Was this answer helpful?
0
0

Top ICAR AIEEA Forestry Agroforestry Silviculture Questions

View More Questions