Which view is considered best for turgor changes in guard cells

Options

A. Photosynthesis of chloroplasts in guard cells
B. Starch is converted into suger in guard cells
C. Starch is converted into glucose in guard cells
D. Potassium is transported into guard cells.

Answer

To determine which view is considered best for turgor changes in guard cells, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Guard Cells**:
- Guard cells are specialized cells that surround the stomata (pores) in plant leaves. They regulate the opening and closing of these stomata, which is crucial for gas exchange and transpiration.

2. **Define Turgor Pressure**:
- Turgor pressure refers to the pressure exerted by the fluid (water) inside the vacuole of the guard cells against the cell wall. This pressure is essential for maintaining the structure and function of the guard cells.

3. **Identify Factors Influencing Turgor Pressure**:
- Turgor pressure is influenced by the movement of water into and out of the guard cells, which is affected by the concentration of solutes within the cells.

4. **Consider the Options Given**:
- The options provided are:
- Photosynthesis of chloroplast in guard cells
- Starch is converted into sugar in guard cells
- Starch is converted into glucose in guard cells
- Potassium is transported into guard cells

5. **Analyze Each Option**:
- **Photosynthesis of chloroplast in guard cells**: While photosynthesis occurs in guard cells, it does not directly relate to turgor changes.
- **Starch is converted into sugar in guard cells**: This process does occur but is not the primary factor influencing turgor pressure.
- **Starch is converted into glucose in guard cells**: Similar to the previous point, this conversion is not the main factor affecting turgor pressure.
- **Potassium is transported into guard cells**: This is the key factor. The influx of potassium ions (K+) into guard cells leads to an increase in osmotic pressure, causing water to enter the cells, which increases turgor pressure and facilitates the opening of stomata.

6. **Conclusion**:
- The best view for turgor changes in guard cells is the transport of potassium ions into the guard cells. This process directly influences the turgor pressure by altering the osmotic balance within the cells.

### Final Answer:
The best view for turgor changes in guard cells is **potassium is transported into guard cells**.

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