Mycorrhiza is helpful in

Options

A. Synthesis of food
B. Getting nutrients from soil
C. Providing resistance against different regulators
D. Increase the fertility of soil

Answer

### Step-by-Step Solution:

1. **Understanding Mycorrhiza**: Mycorrhiza refers to the symbiotic association between fungi and the roots of higher plants. This relationship is crucial for plant health and growth.

2. **Function of Mycorrhiza**: The primary role of mycorrhiza is to enhance nutrient absorption. The fungi absorb water and essential nutrients, particularly phosphorus, from the soil and transfer them to the plant roots.

3. **Identifying the Options**:
- **Option 1: Synthesis of food** - This is incorrect because the synthesis of food in plants occurs through photosynthesis, not through mycorrhizal association.
- **Option 2: Getting nutrients from soil** - This is correct as mycorrhizae facilitate the uptake of nutrients from the soil, which is their main function.
- **Option 3: Providing resistance against different regulators** - This is incorrect; mycorrhizae do not primarily provide resistance against pathogens or pests.
- **Option 4: Increase the fertility of the soil** - This is also incorrect; while mycorrhizae increase the surface area for absorption, they do not directly increase soil fertility.

4. **Conclusion**: The most accurate answer is **Option 2: Getting nutrients from soil**, as this is the primary benefit of mycorrhizal associations.