Rhizobium bacteria and leguminous plants share a ________ relationship with each other.

Options

A. symbiotic
B. parasitic
C. commensalism`
D. mutual

Answer

**Step-by-Step Solution:**

1. **Identify the Organisms**: The question mentions Rhizobium bacteria and leguminous plants. Rhizobium is a type of bacteria that is known for its ability to fix nitrogen.

2. **Understand the Relationship**: Rhizobium bacteria live in the root nodules of leguminous plants (like peas and soybeans). This relationship is important because Rhizobium converts atmospheric nitrogen into ammonia, which is a form of nitrogen that plants can use for growth.

3. **Define the Type of Relationship**: The relationship between Rhizobium and leguminous plants is beneficial for both parties. The bacteria provide nitrogen to the plants, while the plants provide carbohydrates and a suitable environment for the bacteria.

4. **Choose the Correct Term**: The options provided are symbiotic, parasitic, commensalism, and mutualism. The relationship where both organisms benefit is known as mutualism. However, since the term "symbiotic" is often used to describe relationships where two different organisms live together, and in this case, both are benefiting, the correct answer is "symbiotic."

5. **Final Answer**: Therefore, Rhizobium bacteria and leguminous plants share a **symbiotic** relationship with each other.

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