Mycorrhizae, an association of fungus and angiospermic root is referred as

Options

A. amensalism
B. mutualism
C. parasitism
D. commensalism

Answer

To answer the question regarding mycorrhizae, we will break down the information step by step.

### Step-by-Step Solution:

1. **Understanding Mycorrhizae**: Mycorrhizae is a symbiotic association between fungi and the roots of angiospermic plants (flowering plants). This relationship is crucial for the growth and health of many plants.

2. **Role of Fungi**: In this association, the fungal partner helps the plant by enhancing its ability to absorb essential nutrients from the soil, such as phosphorus and nitrogen. This is particularly important for plant growth and development.

3. **Role of Angiospermic Roots**: The roots of angiospermic plants, being photosynthetic, produce energy-yielding carbohydrates through the process of photosynthesis. These carbohydrates are then shared with the fungal partner.

4. **Mutual Benefit**: The key aspect of mycorrhizae is that both organisms benefit from this relationship. The plant receives nutrients from the fungus, while the fungus receives carbohydrates from the plant.

5. **Identifying the Type of Interaction**: Given that both the fungus and the angiospermic plant benefit from this association, mycorrhizae is classified as a type of mutualism.

6. **Conclusion**: Therefore, the correct answer to the question is that mycorrhizae is referred to as **mutualism**.