Identify the correct statements and find out the correct combination ?
1. Accumulation of `K^(+)` ions in guard cells does not require energy
2. A high pH favours stomatal opening
3. Movemant of chloride ions into guard cells is in response to electrical differential created by `K^(+)` ions
4. With entry of several `K^(+)`ions and chloride ions, water potential of guard cells increases .

Options

A. 1 and 3
B. 1 and 2
C. 2 and 3
D. 3 and 4

Answer

To solve the question, we need to analyze each statement regarding the transport of ions in guard cells and determine which ones are correct.

### Step-by-Step Solution:

1. **Evaluate Statement 1:**
- **Statement:** Accumulation of K⁺ ions in guard cells does not require energy.
- **Analysis:** This statement is incorrect. The accumulation of K⁺ ions in guard cells requires energy in the form of ATP because it involves active transport mechanisms. Therefore, this statement is **false**.

2. **Evaluate Statement 2:**
- **Statement:** A high pH favors stomatal opening.
- **Analysis:** This statement is correct. A higher pH in the guard cells can lead to the activation of enzymes and processes that facilitate stomatal opening. Thus, this statement is **true**.

3. **Evaluate Statement 3:**
- **Statement:** Movement of chloride ions into guard cells is in response to the electrical differential created by K⁺ ions.
- **Analysis:** This statement is also correct. The influx of K⁺ ions creates an electrical gradient that attracts negatively charged chloride ions into the guard cells. Therefore, this statement is **true**.

4. **Evaluate Statement 4:**
- **Statement:** With the entry of several K⁺ ions and chloride ions, the water potential of guard cells increases.
- **Analysis:** This statement is incorrect. The entry of K⁺ and Cl⁻ ions into guard cells actually decreases the water potential, causing water to enter the cells and leading to turgor pressure that opens the stomata. Hence, this statement is **false**.

### Conclusion:
Based on the evaluations:
- Statement 1: False
- Statement 2: True
- Statement 3: True
- Statement 4: False

The correct combination of statements is **2 and 3**.

### Final Answer:
The correct option is **2 and 3**.

---