The cells of cork are dead and have a chemical in their walls that makes them impervious to gas and water. The chemical is _________.
A. Lignin
B. Suberin
C. Cutin
D. Wax.
Answer:B
The cells of cork are dead and have a chemical in their walls that makes them impervious to gas and water. The chemical is _________.
A. Lignin B. Suberin C. Cutin D. Wax.