The cell of a root nodule in leguminous plant shows a rod shaped structure called …………

Options

A. Bacteria
B. Infection thread
C. Bacteroid
D. Ureide

Answer

To answer the question regarding the rod-shaped structure found in the cells of a root nodule in leguminous plants, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Context**: Understand that the question pertains to root nodules in leguminous plants, which are known for their symbiotic relationship with certain bacteria.

2. **Recognize the Role of Bacteria**: In leguminous plants, root nodules are primarily formed by the bacteria known as Rhizobium. These bacteria are crucial for nitrogen fixation.

3. **Describe the Structure**: Within the root nodules, the Rhizobium bacteria take on a specific form. They are often described as having a rod-shaped structure.

4. **Name the Structure**: The rod-shaped structure that is formed by the Rhizobium bacteria in the root nodules is referred to as a "Bacteroid."

5. **Select the Correct Answer**: Based on the information, the correct answer to the question is "Bacteroid," which is option 3.

### Final Answer:
The cell of a root nodule in leguminous plants shows a rod-shaped structure called **Bacteroid**.

---