Give the ionic form in which phosphorus is absorbed by plants.

Explanation

### Step-by-Step Solution:

1. **Identify the Element**: The question asks for the ionic form in which phosphorus is absorbed by plants. Phosphorus is a macronutrient essential for plant growth.

2. **Understand the Role of Phosphorus**: Phosphorus is crucial for various biological functions in plants, including being a part of nucleic acids and playing a role in metabolic activities and enzymatic functions.

3. **Absorption Mechanism**: Plants do not absorb elemental phosphorus directly. Instead, they take up phosphorus from the soil in a different form.

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