Question

the formation of annual ring is due to variation in the activity of cambium​

Answer 1

Annual rings are formed due to the cell division in the vascular cambium.

Explanation:

• Every year, trees form new cells that arrange in circular order.
• The rings represent how much wood has been produced during the seasonal growth period.
• Annual rings help scientists to learn about the age of a tree.
• After when a year, the cambium produces a layer of xylem.
• By counting the number of rings, we can calculate the years.