Physiological demonstration of osmosis is carried out by

Options

A. Potometer
B. Bell jar experiment
C. Thistle funnel whose mouth is tied with egg membrane
D. Thistle funnel whose mouth is tied with paper .

Answer

**Step-by-Step Solution:**

1. **Understanding Osmosis**:
- Osmosis is defined as the movement of water (solvent) from a region of lower solute concentration (dilute solution) to a region of higher solute concentration (concentrated solution) through a semi-permeable membrane.

2. **Identifying the Options**:
- The options provided are:
a) Potometer
b) Bell jar experiment
c) Thistle funnel whose mouth is tied with egg membrane
d) Thistle funnel whose mouth is tied with paper

3. **Analyzing Each Option**:
- **Potometer**: This device is used to measure the rate of water uptake in plants, not specifically for demonstrating osmosis.
- **Bell Jar Experiment**: This is typically used to demonstrate gas exchange or photosynthesis, not osmosis.
- **Thistle Funnel with Egg Membrane**: The egg membrane acts as a semi-permeable membrane, allowing water to pass through while preventing solutes from passing, making it suitable for demonstrating osmosis.
- **Thistle Funnel with Paper**: Paper does not function as a semi-permeable membrane, so this option is incorrect for demonstrating osmosis.

4. **Conclusion**:
- The correct option for the physiological demonstration of osmosis is the **Thistle funnel whose mouth is tied with egg membrane**.

5. **Final Answer**:
- The answer to the question is **C) Thistle funnel whose mouth is tied with egg membrane**.

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