Question

In a fully turgid cell, the wall pressure is ___________.

• A. Inversely proportional to TP
• B. Less than TP
• C. Equal to TP
• D. Greater than TP

Hint:

At full turgidity: {Wall Pressure = Turgor Pressure}.

Answer 1

The Correct Option is C

Step 1: Understanding turgor pressure and wall pressure.
Turgor pressure (TP) is the pressure exerted by the cell contents against the cell wall, while wall pressure (WP) is the counter pressure exerted by the cell wall.
Step 2: Condition of a fully turgid cell.
In a fully turgid cell, the inward wall pressure exactly balances the outward turgor pressure. Hence, the two pressures are equal in magnitude.
Step 3: Analysis of options.
(A) Inversely proportional to TP: Incorrect — WP directly balances TP.
(B) Less than TP: Incorrect — this occurs before full turgidity.
(C) Equal to TP: Correct — at full turgidity, WP = TP.
(D) Greater than TP: Incorrect — this condition does not occur in living cells.
Step 4: Conclusion.
In a fully turgid cell, wall pressure is equal to turgor pressure.