Flaccidity is

Options

A. Distended nature of plant cell
B. Percentage gain in volume of celll due to endosmosis
C. Loss of turgidity
D. Volume of cell in isotonic solution.

Answer

### Step-by-Step Solution:

1. **Understanding Flaccidity**: Flaccidity refers to the condition of a plant cell when it has lost turgor pressure. Turgor pressure is the pressure of the cell contents against the cell wall, which helps maintain the cell's shape and firmness.

2. **Hypertonic Solution**: When a plant cell is placed in a hypertonic solution (a solution with a higher concentration of solutes compared to the inside of the cell), water moves out of the cell through osmosis. This movement of water occurs because the cell's internal environment is less concentrated than the surrounding solution.

3. **Loss of Water**: As water leaves the plant cell, the protoplasm (the living part of the cell) shrinks away from the cell wall. This creates a gap between the cell membrane and the cell wall.

4. **Resulting Condition**: The loss of water leads to a decrease in turgor pressure, resulting in flaccidity. The cell becomes limp and loses its firmness, which is the opposite of being turgid (swollen and firm).

5. **Conclusion**: Therefore, flaccidity is characterized by the loss of turgidity in plant cells, particularly when they are placed in hypertonic solutions.

### Final Answer:
Flaccidity is the loss of turgidity in plant cells, which occurs when they are placed in a hypertonic solution, leading to water loss and a decrease in cell volume.

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