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Question
Assertion :Growth rings are also called as annual rings. Reason: Generally growth ring is formed in each year.
Assertion :Growth rings are also called as annual rings. Reason: Generally growth ring is formed in each year.
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Solution
The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
The activity of the cambium is commonly periodic in the temperate regions and the xylem produced during one growth period constitutes a growth layer. In transverse sections of sterns and roots, autumn wood (summer wood) and spring wood appear in the form of distinct concentric circles known as the annual rings. Springwood circle and autumn wood circle, constitute an annual ring. Like this, year after year, such rings in the oldest part of the tree corresponds to its age.So the correct answer is A.
The activity of the cambium is commonly periodic in the temperate regions and the xylem produced during one growth period constitutes a growth layer. In transverse sections of sterns and roots, autumn wood (summer wood) and spring wood appear in the form of distinct concentric circles known as the annual rings. Springwood circle and autumn wood circle, constitute an annual ring. Like this, year after year, such rings in the oldest part of the tree corresponds to its age.
So the correct answer is A.
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