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प्रश्न
Annual rings are the number of ______.
विकल्प
internodes in a stem
rings of vascular bundles in a monocot stem
barks layers in a woody stem
layers of Xylem in a stem
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उत्तर
Annual rings are the number of layers of Xylem in a stem.
Explanation:
Annual rings are the xylem rings. They determine the age of the tree.
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