Plant cells do not burst in distilled water because

Options

A. cell wall is elastic , rigid and gets stretched
B. cell wall is living
C. cell wall is the outermost layer in plant cell
D. cell wall is permeable

Answer

### Step-by-Step Solution:

1. **Understanding the Context**: The question asks why plant cells do not burst when placed in distilled water. This relates to the concept of osmosis and the structural differences between plant and animal cells.

2. **Identifying the Structure of Plant Cells**: Plant cells have a unique structure that includes a cell wall. The cell wall is the outermost layer of the plant cell.

3. **Properties of the Cell Wall**: The cell wall is characterized by being rigid, elastic, and non-living. These properties are crucial in maintaining the integrity of the cell when it is exposed to hypotonic solutions like distilled water.

4. **Effect of Distilled Water on Cells**: When plant cells are placed in distilled water, water enters the cells due to osmosis. In a hypotonic solution, water moves into the cell, causing it to swell.

5. **Role of the Cell Wall**: The rigidity of the cell wall prevents the cell from bursting under the pressure of the incoming water. The elastic nature of the cell wall allows it to stretch to a certain extent, accommodating the increase in internal pressure without rupturing.

6. **Comparison with Animal Cells**: Unlike plant cells, animal cells do not have a cell wall. When placed in distilled water, animal cells swell and can burst because they lack the rigid structure that plant cells possess.

7. **Conclusion**: Therefore, plant cells do not burst in distilled water due to the presence of a rigid and elastic cell wall that can withstand the osmotic pressure.

### Final Answer:
Plant cells do not burst in distilled water because the cell wall is elastic, rigid, and can stretch to accommodate the influx of water without breaking.

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