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  • An annual ring is formed by Option: 1 Two consecutive rings of spring wood Option: 2

An annual ring is formed by 

Option: 1

Two consecutive rings of spring wood 


Option: 2

Two alternate rings of spring wood and autumn wood 


Option: 3

Two consecutive rings of autumn wood  


Option: 4

Two altenate rings of sapwood and heartwood 


Answers (1)

best_answer

As we have learned

Annual ring -

Annual rings are formed due to inequal activity of vascular cambium. In winter or autumn season, the activity of the cambium is less and cuts off small sized xylem elements (vessels) which constitute late wood or autumn wood. The vascular cambium is highly active in spring or summer and secondary xylem is formed.

- wherein

Cells are large with wide lumen. The wood is known as spring wood or early wood. Spring wood is lighter in colour and less dense whereas autumn wood is darker and highly dense. 

 

 

 

Posted by

jitender.kumar

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