Plants that have mutualistic relations with nitrogen-fixing bacteria provide the bacteria with

Options

A. `N_(2)`
B. enzymes
C. sugars
D. nitrite

Answer

**Step-by-Step Solution:**

1. **Understanding Mutualistic Relationships**: Recognize that mutualistic relationships involve two organisms benefiting from each other. In this case, we are focusing on the relationship between plants and nitrogen-fixing bacteria.

2. **Identifying the Plants Involved**: Note that the plants that typically have mutualistic relationships with nitrogen-fixing bacteria are leguminous plants (like peas, beans, and clover).

3. **Defining the Symbiotic Relationship**: Understand that this relationship is called a symbiotic relationship, where both the plant and the bacteria gain benefits. The bacteria help the plants by converting atmospheric nitrogen into a usable form.

4. **Determining What Plants Provide**: Identify what the plants provide to the nitrogen-fixing bacteria. In this case, plants provide shelter and sugars to the bacteria.

5. **Understanding the Benefit to Plants**: Recognize that in return for the sugars and shelter, the nitrogen-fixing bacteria provide ammonia, which is a form of nitrogen that plants can use for growth.

6. **Evaluating the Options**: Given the options provided in the question, evaluate each one:
- Nitrogen (wrong)
- Enzymes (wrong)
- Sugars (correct)
- Nitrite (wrong)

7. **Conclusion**: Conclude that the correct answer to the question is that plants provide nitrogen-fixing bacteria with sugars.

**Final Answer**: Plants that have mutualistic relationships with nitrogen-fixing bacteria provide the bacteria with **sugars**.

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