Mention the most significant function/role of fusiform initials.

Explanation

**Step-by-Step Solution:**

1. **Definition of Fusiform Initials**: Fusiform initials are specialized cells found in the vascular tissue of plants. They serve as the mother cells for the formation of xylem and phloem elements, which are crucial for the plant's transport system.

2. **Characteristics of Fusiform Initials**: These cells are characterized by their flat, elongated shape with pointed ends. They are also highly vacuolated, which means they contain many vacuoles that can store substances and maintain turgor pressure.

3. **Shape and Naming**: The term "fusiform" refers to their spindle-like shape. This shape is significant as it allows them to align in a parallel orientation along the axis of the plant organ, facilitating efficient growth and development.

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