Boron is absorbed as

Options

A. borate ions
B. solution in water
C. as boron trichloride
D. none of these

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks in which form boron is absorbed by plants. This involves knowing the chemical forms in which boron can exist and how plants utilize it.

2. **Identifying Nutrient Categories**: Nutrients for plants are categorized into macronutrients and micronutrients. Macronutrients are required in larger quantities, while micronutrients are needed in smaller amounts. Boron falls under the category of micronutrients.

3. **Recognizing Boron’s Role**: Boron is essential for various physiological functions in plants, including:
- Uptake and utilization of calcium ions
- Membrane functioning
- Pollen germination
- Cell elongation and differentiation
- Carbohydrate translocation

4. **Determining the Form of Absorption**: Boron is absorbed by plants primarily in the form of borate ions when dissolved in water. This indicates that plants take up boron as an ion rather than in any other form.

5. **Choosing the Correct Option**: Given the options provided (borate ion, boron, trichloride, none of these), the correct answer is that boron is absorbed as borate ions.

**Final Answer**: Boron is absorbed as borate ions.

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