Question

The common bottle cork is a product of :

• A. Dermatogen
• B. Phellogen
• C. Xylem
• D. Vascular cambium

Answer 1

The correct option is B Phellogen

The cells of the cork cambium divide to produce an outer corky tissue (cork or phellem) and an inner secondary cortex (phelloderme). The common bottle cork produced from Quercus suber is a product of phellogen.

Phellogen or cork cambium is the meristematic tissue that gives rise to the secondary growth of the plant by forming periderm and is a buoyant light brown substance obtained from the outer layer of the bark of the cork oak.

So the correct option is 'Phellogen'.