Boron is not required for :

Options

A. Pollen germination
B. Photolysis of water
C. Sugar translocation
D. Uptake and utilisation of `Cat^(++)` ions

Answer

To determine which function Boron is not required for, we can analyze the functions of Boron in plants and compare them to the options provided.

### Step-by-Step Solution:

1. **Identify Boron's Role**:
- Boron is a micronutrient that is absorbed by plants in the form of borate ions (B O3^3-). It is essential for various physiological functions in plants.

2. **List Functions of Boron**:
- **Uptake and Utilization of Calcium Ions**: Boron aids in the absorption and use of calcium in plants.
- **Functioning of Cell Membrane**: Boron is involved in maintaining the integrity and function of cell membranes.
- **Pollen Germination**: Boron plays a role in the germination of pollen, which is crucial for reproduction.
- **Translocation of Carbohydrates**: Boron helps in the transport of carbohydrates through the phloem.

3. **Analyze the Options**:
- Based on the functions listed above, we can identify which option does not relate to Boron.
- The options provided include:
- Pollen Germination (Boron is required)
- Photolysis of Water (This is primarily associated with Manganese)
- Translocation of Carbohydrates (Boron is required)
- Uptake and Utilization of Calcium Ions (Boron is required)

4. **Determine the Correct Answer**:
- The function that Boron is not required for is **Photolysis of Water**, as this process is primarily facilitated by Manganese.

### Final Answer:
Boron is not required for **Photolysis of Water**.

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