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Which of the following is involved in secondary thickening in plants?

Which of the following is involved in secondary thickening in plants?
Take Free Practice Test On 2026 JAMB UTME, Post UTME, WAEC SSCE, GCE, NECO SSCE
  • A Collenchyma and xylem cells
  • B Vascular cambium
  • C Cork cambium and sclerenchyma
  • D Vascular cambium and cork cambium
Correct Answer: Option D
Explanation:

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