Which of the following is used to obtain commercial cork?
Quercus
Salix
Betula
Morus
A
Quercus
B
Betula
C
Morus
D
Salix
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Solution
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Commercial cork is obtained from the bark of Quercus suber( cork oak), native to and cultivated in the Mediterranean region, which is endemic to southwest Europe and northwest Africa. Cork is composed of suberin, a hydrophobic substance, and because of its impermeable, buoyant, elastic and fire retardant properties, it is used in a variety of products, the most common of which is for wine stoppers.
So, the correct answer is 'Quercus'
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