Diffusion of water through selectively permeable membrane is

Options

A. Diffusion
B. Imbibition
C. Osmosis
D. Translocation

Answer

To answer the question regarding the diffusion of water through a selectively permeable membrane, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Terms**:
- **Diffusion**: This is the movement of molecules from an area of higher concentration to an area of lower concentration without the need for a membrane.
- **Osmosis**: This is a specific type of diffusion that refers to the movement of water molecules through a selectively permeable membrane from an area of higher water concentration (or lower solute concentration) to an area of lower water concentration (or higher solute concentration).
- **Imbibation**: This refers to the absorption of water by solids, particularly in the context of seeds and plant tissues.
- **Translocation**: This is the process of transporting nutrients and water within the plant through vascular tissues (xylem and phloem).

2. **Identifying the Correct Process**:
- Since the question specifically asks about the diffusion of water through a selectively permeable membrane, we need to focus on osmosis.
- Osmosis is characterized by the selective permeability of the membrane, which allows only water molecules to pass while restricting solute molecules.

3. **Conclusion**:
- Therefore, the correct answer to the question is **osmosis**. This process involves the movement of water through a selectively permeable membrane, making it distinct from general diffusion.

### Final Answer:
The diffusion of water through a selectively permeable membrane is called **osmosis**.

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