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Discussion

Primary phloem develops from

  • A.Lateral meristem
  • B.Protoderm
  • C.Extrastelar cambium
  • D.Provascular tissue

Answer: D

Primary phloem develops from the provascular (procambial) tissue.

The procambium is the primary meristem laid down behind the growing point; it gives rise to primary xylem inward and primary phloem outward. Secondary phloem comes later, from the vascular cambium.

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