Which is not correct for nitrate assmilation in plants

Options

A. It is a process of reduction
B. No energy is required
C. Requires `e^(-)` and `H^(+)` source
D. Occurs in root and leaf

Answer

To determine which statement about nitrate assimilation in plants is not correct, we will analyze each option provided.

### Step-by-Step Solution:

1. **Understanding Nitrate Assimilation**: Nitrate assimilation is the process by which plants convert nitrate (NO3-) into organic forms of nitrogen, primarily amino acids. This process involves a series of biochemical reactions.

2. **Analyzing Option 1**:
- **Statement**: "It is a process of reduction."
- **Evaluation**: This statement is correct. Nitrate assimilation involves the reduction of nitrate to nitrite and then to ammonia, which is a reduction process.

3. **Analyzing Option 2**:
- **Statement**: "No energy is required."
- **Evaluation**: This statement is incorrect. Nitrate assimilation requires energy, primarily in the form of ATP, to drive the biochemical reactions involved in the reduction of nitrate to ammonia.

4. **Analyzing Option 3**:
- **Statement**: "Nitrate assimilation requires electron and proton sources."
- **Evaluation**: This statement is correct. The reduction of nitrate involves the transfer of electrons and protons, which are necessary for the conversion of nitrate to ammonia.

5. **Analyzing Option 4**:
- **Statement**: "It occurs in roots and leaves."
- **Evaluation**: This statement is also correct. Nitrate assimilation occurs in both the roots (where nitrate is absorbed) and the leaves (where the reduction occurs).

6. **Conclusion**: Based on the evaluations, the incorrect statement regarding nitrate assimilation in plants is **Option 2**, which claims that no energy is required.

### Final Answer:
The statement that is not correct for nitrate assimilation in plants is: **"No energy is required."**

---