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Question

Increase in circumference of stem is due to the activity of

A
Xylem
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B
Phloem
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C
Cambium
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D
Cortex
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Solution

The correct option is C Cambium
During secondary growth, when the cells of interfascicular parenchyma and procambium divide and differentiate vascular cambium is produced. When the vascular cambium undergo multiplicative division produces more initial cell and result in the increased circumference of vascular cambium which leads to the increase in circumference of stem.

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