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As secondary growth proceeds, in a dicot stem, the thickness of
Option: 1
sapwood increases
Option: 2
heartwood increases
Option: 3
both sapwood and heartwood increases
Option: 4
both sapwood and heartwood remains same
Answers (1)
Increase in thickness or volume of stem due to the formation of secondary tissues is called Secondary growth. It occurs in dicotyledons and gymnosperms.
During secondary growth, the thickness of heartwood increases, because every sap wood gradually converts into the heartwood.
Hence, the correct answer is option 2.
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