In the root nodules of leguminous plants, what is the role off nitrogenase and leghaemoglobin?

Explanation

**Step-by-Step Solution:**

1. **Understanding the Context**:
- Leguminous plants have a symbiotic relationship with specific bacteria (like Rhizobium) that reside in their root nodules. These bacteria play a crucial role in nitrogen fixation.

2. **Role of Nitrogenase**:
- Nitrogenase is an enzyme found in the root nodules of leguminous plants. Its primary function is to catalyze the conversion of atmospheric nitrogen (N₂) into ammonia (NH₃).
- This process is essential because plants cannot utilize atmospheric nitrogen directly; they need it in a fixed form, such as ammonia, to synthesize proteins and other vital compounds.
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