Question

The number of growth rings (sum of the rings of spring wood and autumn wood) in the year 2000 is found to be 20. What will be the number of annual rings in 2018?

• A. 38
• B. 8
• C. 28
• D. 18

Answer 1

The correct option is A 38

Every year one spring ring and one autumn rings make one annual ring which is used to estimate the age of the plant.

Hence the number of rings present in 2000=20

Therefore, the number of rings present in 2018=20+18

That is equal to 38 rings after 18 years.

So the correct option is '38'