Question
Biology Question on Secondary Growth
Commercial cork is obtained from:
A
Flax
B
juglans regia
C
Hevea brassiliansis
D
Quercus suber
Answer
Quercus suber
Explanation
Solution
The cork of commerce is obtained from Quercus suber. The first formed periderm, called virgin cork is removed when the tree is just 20 years old.