Physical phenomenon that occur in Osmosis is

Options

A. Diffusion
B. Evaporation
C. Percolation
D. Plasmolysis

Answer

**Step-by-Step Solution:**

1. **Understanding Osmosis**:
- Osmosis is defined as the movement of water molecules from an area of lower solute concentration to an area of higher solute concentration through a semi-permeable membrane.

2. **Identifying Key Characteristics**:
- It is essential to note that osmosis specifically involves the diffusion of water, which is a solvent, rather than solutes.

3. **Analyzing the Options**:
- The options given are diffusion, evaporation, pre-collation, and plosmolysis.
- Among these, diffusion is the process that directly relates to the movement of water in osmosis.

4. **Conclusion**:
- Since osmosis is fundamentally a type of diffusion (specifically the diffusion of water through a semi-permeable membrane), the correct answer to the question about the physical phenomenon that occurs in osmosis is **diffusion**.