In mycorrhizae the fungus provides minerals and water to the roots, in turn the roots provide

Options

A. sugars and N-containing compounds
B. sugars and S-containing compounds
C. sugars and P-containing compounds
D. sugars and K-containing compounds

Explanation

To answer the question about what roots provide to fungi in a mycorrhizal relationship, we can break it down into the following steps:

### Step-by-Step Solution:

1. **Understanding Mycorrhizae**:
- Mycorrhizae is a symbiotic association between fungi and the roots of higher plants. In this relationship, both organisms benefit from each other.

2. **Role of Fungi**:
- The primary role of the fungus in this association is to provide essential minerals and water to the plant roots. The fungus absorbs these nutrients from the soil and makes them available to the plant.

3. **Role of Plant Roots**:
- In return for the minerals and water provided by the fungus, the roots of the plants supply the fungus with organic compounds.

4. **Photosynthesis and Organic Compounds**:
- Plants produce sugars through the process of photosynthesis. These sugars are vital for the energy needs of the fungus.

5. **Additional Compounds**:
- Along with sugars, roots also provide nitrogen-containing compounds to the fungi. These compounds are crucial for the growth and metabolism of the fungi.

6. **Conclusion**:
- Therefore, in mycorrhizae, the roots provide sugars and nitrogen-containing compounds to the fungi.

### Final Answer:
In mycorrhizae, the roots provide sugars and nitrogen-containing compounds to the fungi.