Pigment leghaeoglobin is present in the roots of

Options

A. Maize
B. Rice
C. Alfalfa
D. Potato

Answer

**Step-by-Step Solution:**

1. **Identify the Pigment**: The question asks about the pigment "leghemoglobin," which is similar to hemoglobin and is found in certain plant roots.

2. **Understand the Function of Leghemoglobin**: Leghemoglobin acts as an oxygen scavenger. It helps maintain a low oxygen concentration in the root nodules of leguminous plants, which is essential for the functioning of the enzyme nitrogenase.

3. **Identify the Plants Mentioned**: The options provided are maize, rice, alfalfa, and potato.

4. **Determine the Leguminous Plant**: Among the options, alfalfa is a leguminous plant. Leguminous plants are known for forming symbiotic relationships with nitrogen-fixing bacteria (like Rhizobia) in their root nodules.

5. **Explain the Role of Rhizobia**: Rhizobia bacteria live in the root nodules of legumes and are responsible for fixing atmospheric nitrogen into ammonia, which can be utilized by the plant.

6. **Conclude the Answer**: Since leghemoglobin is specifically found in the root nodules of leguminous plants, the correct answer to the question is alfalfa.

**Final Answer**: The pigment leghemoglobin is present in the roots of alfalfa.

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