Phosphorus is absorbed by the plants from soil in the form of

Options

A. `H_(2)PO_(4)^(-)`
B. `HPO_(4)^(2-)`
C. `PO_(4)^(3-)`
D. Both (a) and (b)

Answer

To solve the question of how phosphorus is absorbed by plants from the soil, we can break it down into the following steps:

### Step-by-Step Solution:

1. **Understanding Phosphorus in Plants**:
- Phosphorus is an essential nutrient for plants, primarily involved in the synthesis of proteins and nucleic acids.

2. **Forms of Phosphorus in Soil**:
- Phosphorus in the soil exists in various forms, but not all forms are absorbable by plants.

3. **Key Absorbable Forms**:
- The two main forms of phosphorus that plants can absorb are:
- **H2PO4^-** (Dihydrogen Phosphate)
- **HPO4^2-** (Hydrogen Phosphate)

4. **Absorption Mechanism**:
- Plants have specific transport mechanisms that allow them to take up these phosphate ions from the soil solution.

5. **Non-Absorbable Form**:
- It is important to note that plants cannot absorb phosphorus in its original or nascent form, which is not soluble in water.

6. **Conclusion**:
- Therefore, the correct answer to the question is that phosphorus is absorbed by plants from the soil in the form of **H2PO4^- (Phosphoric Acid)** and **HPO4^2- (Hydrogen Phosphate)**.

### Final Answer:
Phosphorus is absorbed by plants from the soil in the form of **H2PO4^- (Phosphoric Acid)** and **HPO4^2- (Hydrogen Phosphate)**.

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