After fertilization, ______ gets converted to seed.

Explanation

**Step-by-Step Solution:**

1. **Understanding Fertilization**: Fertilization in plants occurs when the male gamete (sperm cell) fuses with the female gamete (egg or ovum). This process typically takes place inside the ovule.

2. **Identifying the Process**: After fertilization has occurred, the next stage involves the development of the fertilized ovule. This is crucial as it marks the beginning of seed formation.

3. **Conversion to Seed**: After successful fertilization, the ovule undergoes changes and develops into a seed. This means that the ovule is the structure that transforms into the seed post-fertilization.

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