Question

Assertion : Cork or phellem is impervious to water.
Reason : Cork has suberin deposition in the cell wall.

• A. If both assertion and reason are true and reason is the correct explanation of assertion
• B. If both assertion and reason are true but reason is not the correct explanation of assertion
• C. If assertion is true but reason is false
• D. If both assertion and reason are false

Answer 1

Answer: (A)

Phellogen produces cork or phellem on the outer side. It consists of dead and compactly arranged rectangular cells. These cells are impervious to water due to suberin deposition in the cell walls. The cork cells contain tannins. Hence, they appear brown or dark brown in colour.