Root nodules are formed from the cells of

Options

A. epidermis
B. cortex
C. vascular cylinder
D. pith

Answer

**Step-by-Step Solution:**

1. **Understanding Root Nodules**: Root nodules are specialized structures that form on the roots of certain plants, particularly leguminous plants. They are associated with nitrogen-fixing bacteria.

2. **Identifying the Bacteria**: The primary bacteria responsible for the formation of root nodules are called Rhizobia. These bacteria are beneficial as they help in fixing atmospheric nitrogen into a form that plants can use.

3. **Location of Formation**: The formation of root nodules occurs in the inner cortex of the root. This is where the bacteria induce cell division, leading to the development of the nodules.

4. **Excluding Other Root Parts**: It is important to note that root nodules do not form from the epidermis (which produces root hairs) or the central part of the root (the vascular cylinder). Therefore, the correct answer must focus on the inner cortex.

5. **Conclusion**: Based on the above points, we conclude that root nodules are formed from the cells of the inner cortex of the root.

**Final Answer**: Root nodules are formed from the cells of the inner cortex.

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