Mycorrhiza is a symbiotic association between

Options

A. viruses and bacteria
B. Algae and fungi
C. Fungi and roots of higher plants
D. Blue green algae and roots of higher plants

Answer

**Step-by-Step Solution:**

1. **Understanding Mycorrhizae**: Mycorrhizae refers to the symbiotic association between fungi and plant roots. This relationship is crucial for plant nutrition as it enhances the absorption of water and nutrients from the soil.

2. **Identifying Symbiotic Associations**: A symbiotic association is a close and long-term interaction between different biological organisms. In the case of mycorrhizae, it involves a mutualistic relationship where both the fungus and the plant benefit.

3. **Analyzing the Options**:
- **Option A**: Virus and bacteria - This is incorrect as the relationship between viruses and bacteria is typically parasitic, not symbiotic.
- **Option B**: Algae and fungi - This is also incorrect because the association between algae and fungi is known as lichen, not mycorrhizae.
- **Option C**: Fungi and roots of higher plants - This is the correct option as it directly describes the mycorrhizal association.
- **Option D**: Blue-green algae and roots of higher plants - This is incorrect as it does not describe mycorrhizae.

4. **Conclusion**: Based on the analysis of the options, the correct answer is that mycorrhizae is a symbiotic association between fungi and the roots of higher plants.

**Final Answer**: Mycorrhiza is a symbiotic association between fungi and the roots of higher plants.

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