A) Dermatogen
B) Phellogen
C) Xyiem
D) Vascular cambium
Correct Answer: B
Solution :
[b] The common bottle cork is the product of phellogen. Phellogen produces cork or phellem on the outer side. It consists of dead and compactly arranged rectangular cells that possess suberised cells walls. The cork cells contain tannins. Hence, they appear brown or dark brown in colour. The cork cells of some plants are rilled with air e.g., Quercus suber (Cork Oak or Bottle Cork).
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