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

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?

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?

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

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

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

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

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