Roots of higher plants shows mycorrhiza which is association with ?

Options

A. Algae
B. Fungi
C. BGA
D. Protist

Explanation

### Step-by-Step Solution:

1. **Understanding Mycorrhiza**: Mycorrhiza refers to a symbiotic association between the roots of higher plants and fungi. This relationship is beneficial for both organisms involved.

2. **Identifying the Organisms**: The question provides options: algae, fungi, BGA (Blue Green Algae), and protists. We need to identify which of these is involved in mycorrhizal associations.

3. **Analyzing the Options**:
- **Algae**: While algae are photosynthetic organisms, they do not form mycorrhizal associations with plant roots.
- **Fungi**: Fungi are the primary organisms involved in mycorrhizal associations, where they interact with plant roots.
- **BGA (Blue Green Algae)**: BGA are prokaryotic organisms and do not form mycorrhizal relationships.
- **Protists**: Protists are single-celled eukaryotes and are not typically involved in mycorrhizal associations with plants.

4. **Conclusion**: Based on the analysis, the correct answer is that the roots of higher plants show mycorrhiza, which is an association with **fungi**.

### Final Answer:
The roots of higher plants show mycorrhiza, which is an association with **fungi**.

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