Rhizobium phaseoli fixes atmospheric nitrogen symbiotically in :

Options

A. Pea
B. Bean
C. Jowar
D. Maize

Explanation

**Step-by-Step Solution:**

1. **Understanding Nitrogen Fixation**:
- Nitrogen fixation is the process by which atmospheric nitrogen (N2) is converted into a form that plants can use, such as ammonia (NH3). This process can occur through biological means, involving specific microorganisms.

2. **Role of Rhizobium**:
- Rhizobium is a genus of bacteria that plays a crucial role in biological nitrogen fixation. These bacteria form symbiotic relationships with certain plants, particularly legumes.

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