Social Sciences, asked by salimkhan4224, 1 year ago

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?

Answers

Answered by pstitiksa

the rings form when a layer of the bark dries up and is covered by another layer and so on. the rings tell the age of the tree

Answered by Anonymous

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Hey brainly user...

Here is your answer

The activity of cambium is under the control of many physiological and environmental factors In temperate regions the seasonal variations are more conspicuous

During the favourable season in spring, when more leaves and flowers are formed, the plant requires large amount of water and mineral saltsHence the wood formed in this period shows more xylem vessels This is know as spring wood.

During unfavourable conditions in autumn the plants are less active and no not require more water and mineral salts Hence the wood produced in this period is less number of xylem vessels having marrow lumen This is known as autumn wood or late wood