Which of the following is a wrong statement ?

Options

A. `Cl^- ` along with `K^+` maintain anion- cation balance in the cell.
B. Nitrogen is the essential element required by the plant in the greatest amount it is absorbed , mainly , in the form of `NO_2^- and NH_3 `
C. Sulphur is an important constituent of Coenzyme -A and cysteine.
D. Boron is important for uptake and utilization of `Ca^(++)`

Answer

To solve the question, we need to analyze each of the provided statements regarding essential nutrients for plants and identify the incorrect one.

### Step-by-Step Solution:

1. **Understanding Nutrient Categories**:
- Essential nutrients for plants are categorized into macronutrients and micronutrients.
- Macronutrients are required in large amounts (e.g., nitrogen, phosphorus, potassium).
- Micronutrients are required in smaller amounts (e.g., iron, manganese, boron).

2. **Evaluating Statement 1**:
- "Chlorine along with potassium maintain cation-anion balance in the cell."
- Chlorine is a micronutrient, and potassium is a macronutrient. Both play a role in maintaining cation-anion balance.
- **Conclusion**: This statement is correct.

3. **Evaluating Statement 2**:
- "Nitrogen is an example of macronutrient. Nitrogen is the essential element which is needed by the plant in large quantity and it will be absorbed mainly in the form of Nitrite and Ammonia."
- While nitrogen is indeed a macronutrient, the absorption forms mentioned are incorrect. Nitrogen is primarily absorbed in the form of nitrate (NO3-) rather than nitrite (NO2-) or ammonia (NH3).
- **Conclusion**: This statement is incorrect.

4. **Evaluating Statement 3**:
- "Sulphur is an important constituent of coenzyme A and cysteine."
- Sulphur is indeed a macronutrient and is essential for the synthesis of amino acids like cysteine and methionine, as well as coenzyme A.
- **Conclusion**: This statement is correct.

5. **Evaluating Statement 4**:
- "Boron is important for uptake and utilization of calcium."
- Boron is a micronutrient and is crucial for various plant functions, including calcium uptake and pollen germination.
- **Conclusion**: This statement is correct.

### Final Answer:
The wrong statement is **Statement 2**.

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