Multiple choice

Which of the following meristems is responsible for extrastelar secondary growth in dictyledonous stem?

  1. Interfascicular cambium

  2. Intercalary meristem

  3. Phellogen

  4. Intrafascicular cambium
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Phellogen (cork cambium) is the meristem responsible for extrastelar secondary growth - it produces cork (phellem) outward and secondary cortex (phelloderm) inward. Interfascicular cambium is intrastelar, intercalary meristem is for primary growth at internodes, and intrafascicular cambium is part of the vascular cambium within the vascular bundle.

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