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A transverse section of the trunk of a tree shows

Question:

A transverse section of the trunk of a tree shows concentric rings which are known as growth rings. How are these rings formed? What is the significance of these rings?

Solution:

The growth rings in the trunk of the tree are formed by cambial ring due to secondary growth. Each ring contains earlywood and latewood. Secondary growth occurs in

dicot trees due to the activity of cambium which is a meristematic tissue. The concentric growth rings are called annual rings.

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