Question

The function of cork cambium (phellogen) is to produce

• A. Cork and secondary cortex
• B. Secondary xylem and secondary phloem
• C. Cork and secondary phloem
• D. Secondary cortex and phloem

Answer 1

Answer: (A)

Cork and secondary cortex

• The cork cambium is a lateral meristem that divides to produce cork (Phellem) on the outer side and secondary cortex (Phelloderm) on the inner side.
• Phellogen (cork cambium) is defined as a meristematic cell layer responsible for the development of the periderm (Phellem + Phellogen + Phelloderm).
• The secondary xylem and secondary phloem are produced by the vascular cambium. Thus, options B, C, and D are wrong.

Hence, the correct answer is option A.