In fungi plant symbiotic association, the fungus symbiont absorb which nutrient from soil and passes it to the plants

Options

A. Nitrogen
B. Phosphorus
C. Magnese
D. Calcium

Answer

To solve the question regarding the nutrient absorbed by the fungus in a fungi-plant symbiotic association, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Symbiotic Relationship**: Recognize that the relationship between fungi and plants is a symbiotic one, meaning both organisms benefit from the association. This type of relationship is specifically referred to as mycorrhizae.

**Hint**: Remember that mycorrhizae is a mutualistic relationship between fungi and plant roots.

2. **Identify the Function of Fungi**: In this association, the fungus plays a crucial role in absorbing nutrients from the soil. It helps the plant by increasing the surface area for absorption through its network of hyphae.

**Hint**: Think about how fungi enhance nutrient uptake for plants.

3. **Determine the Nutrients Absorbed**: The primary nutrients that mycorrhizal fungi absorb from the soil include water and minerals. Among the minerals, phosphorus is particularly significant as it is often limited in soil and essential for plant growth.

**Hint**: Consider which mineral is most critical for plant development and often found in low availability in soils.

4. **Evaluate the Options**: The question provides four options: nitrogen, phosphorus, manganese, and calcium. Based on the understanding of mycorrhizal function, phosphorus is the key nutrient that fungi absorb and transfer to plants.

**Hint**: Eliminate options that are not primarily associated with mycorrhizal fungi.

5. **Select the Correct Answer**: After evaluating the options, the correct answer is phosphorus, as it is the nutrient that the fungus symbiont absorbs from the soil and passes to the plants.

**Hint**: Confirm your choice by recalling the importance of phosphorus in plant nutrition.

### Final Answer:
The fungus symbiont absorbs **phosphorus** from the soil and passes it to the plants.