Presence of phosphorus in a plant :

Options

A. Brings about healthy root growth
B. Promotes fruit ripening
C. Retards protein formation
D. None of the above

Answer

**Step-by-Step Solution:**

1. **Understanding the Role of Phosphorus in Plants:**
- Phosphorus is an essential nutrient for plants and plays a critical role in their growth and development. It is involved in several key functions that are vital for plant health.

2. **Key Functions of Phosphorus:**
- **Energy Transfer:** Phosphorus is a component of ATP (adenosine triphosphate), which is crucial for energy transfer within the plant.
- **Photosynthesis:** It aids in the transformation of sugars and starches during the process of photosynthesis.
- **Nutrient Movement:** Phosphorus helps in the movement of nutrients within the plant.
- **Genetic Transfer:** It plays a role in the transfer of genetic information from one generation to the next.

3. **Analyzing the Options:**
- **Option A:** Brings about healthy root growth. (This is true as phosphorus is essential for root development.)
- **Option B:** Promotes fruit ripening. (While phosphorus is important for overall plant health, it is not specifically known for promoting fruit ripening.)
- **Option C:** Retards protein formation. (This is incorrect as phosphorus does not retard protein formation; it actually supports various metabolic processes.)
- **Option D:** None of the above. (This is incorrect as Option A is a valid statement.)

4. **Conclusion:**
- Based on the analysis, the correct answer is **Option A**, which states that phosphorus brings about healthy root growth.