Boron takes part in

Options

A. Photosynthesis
B. Activation of enzymes involved in respiration
C. Transport of carbohydrates through phloem
D. Nitrogen metabolism

Answer

**Step-by-Step Solution:**

1. **Understanding Boron**: Boron is classified as a micronutrient essential for plants, which means it is required in small amounts for their growth and development.

2. **Functions of Boron**:
- Boron plays a crucial role in various physiological processes in plants, including pollination and cell wall formation.
- It is also involved in the transport of carbohydrates, specifically sugars, through the phloem, which is a type of vascular tissue responsible for transporting nutrients.

3. **Analyzing the Options**:
- **Option A: Photosynthesis**: This option states that boron takes part in photosynthesis. However, while boron is important for plant health, it does not directly participate in the photosynthesis process itself. Instead, it aids in the transport of sugars produced during photosynthesis.
- **Option B: Activation of enzymes involved in respiration**: This option suggests that boron activates enzymes for respiration. This is incorrect as boron does not play a role in enzyme activation for respiration.
- **Option C: Transport of carbohydrate through phloem**: This option is correct. Boron is involved in the transport of carbohydrates through the phloem, facilitating the movement of sugars to different parts of the plant.
- **Option D: Nitrogen metabolism**: This option claims that boron is involved in nitrogen metabolism. This is also incorrect, as boron does not play a role in nitrogen metabolism.

4. **Conclusion**: After analyzing all the options, the only correct statement is that boron takes part in the transport of carbohydrates through the phloem.

**Final Answer**: Option C: Transport of carbohydrate through phloem.

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