Question

Commercial cork is obtained from

• A. Berberis/Barberry
• B. Salix/Willow
• C. Quercus/Oak
• D. Betula/Birch.

Answer 1

The Correct Option is C

The question asks about the natural source of commercial cork. Let us analyze the options given and identify the correct answer.

• Berberis/Barberry: This plant is known for its ornamental and medicinal uses, such as in the preparation of herbal remedies. It is not used for producing cork.
• Salix/Willow: Willow is commonly known for its flexible branches and medicinal use in producing aspirin, not for cork production.
• Quercus/Oak: The commercial cork used for various products, including bottle stoppers, floors, and bulletin boards, is primarily obtained from the bark of the Quercus suber, commonly known as the cork oak.
• Betula/Birch: Birch trees are commonly used for their hard and pale wood, particularly in furniture and plywood manufacturing, rather than for cork.

From the above analysis, it is clear that the correct answer is Quercus/Oak. Commercial cork is harvested from the bark of the cork oak, scientifically named Quercus suber. This tree is predominantly found in countries around the Mediterranean Basin, such as Portugal, Spain, and Italy.

The cork oak tree has a unique ability to regenerate its bark, making it an excellent renewable resource. The bark is harvested without harming the tree, allowing it to continue growing and producing cork over many harvest cycles.