What is mycorrhiza?

Explanation

### Step-by-Step Solution:

1. **Definition of Mycorrhiza**: Mycorrhiza is defined as a symbiotic association between fungi and the roots of plants.

2. **Understanding Symbiotic Association**: A symbiotic association is a relationship where both organisms involved benefit from the interaction. In the case of mycorrhiza, both the fungus and the plant gain advantages.

3. **Role of Fungi in Mycorrhiza**: The fungi associated with mycorrhizae play a crucial role in enhancing the plant's ability to absorb water and nutrients. They help in increasing the absorption of water and provide essential nutrients, particularly phosphorus, to the plant.

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