Before being incorporated into orgainc compounds absrobed nitrate is first converted to level of

Options

A. `NH_(3)`
B. `NO_(2)`
C. `N_(2)`
D. `NO_(3)`

Answer

### Step-by-Step Solution:

1. **Understanding Nitrogen Absorption**:
- Plants absorb nitrogen primarily in two forms: ammonium (NH4+) and nitrate (NO3-).

2. **Conversion of Nitrate**:
- The question asks about the conversion of absorbed nitrate before it is incorporated into organic compounds.

3. **Nitrate Reduction Process**:
- The absorbed nitrate (NO3-) undergoes a reduction process. This process involves the conversion of nitrate to nitrite (NO2-).

4. **Nitrate to Nitrite**:
- The first step in the reduction of nitrate is its conversion to nitrite (NO2-). This is an important step in the nitrogen assimilation pathway.

5. **Final Answer**:
- Therefore, before being incorporated into organic compounds, absorbed nitrate is first converted to nitrite (NO2-).