Question

Commercial cork is obtained from ___________________.

• A. Luglans regia of which it is a dead tissue with thickened walls with the deposition of lignin
• B. Betula alba of which it is a semi dead tissues with thickened walls and with the deposition of suberin
• C. Hevea brisiliensis of which it is constituted by some living and more of dead tissues with thickened walls and with the deposition of cutin
• D. Quercus suber of which it is a dead tissue with thickened walls by the deposition of suberin

Answer 1

The correct option is D Quercus suber of which it is a dead tissue with thickened walls by the deposition of suberin

D. Quercus suber of which it is a dead tissue with thickened walls by the deposition of suberin

Cork is an impermeable buoyant material, the phellem layer of bark tissue that is harvested for commercial use primarily from Quercus suber, which is endemic to southwest Europe and northwest Africa.