Give appropriate biological / technical terms : Petals are free from one another.

Explanation

**Step-by-Step Solution:**

1. **Understanding Petal Arrangement**: Petals in flowers can be arranged in two main ways: they can be free from each other or they can be united (fused together).

2. **Identifying the Terms**:
- When petals are free from one another, this condition is referred to as "polypetalus."
- Conversely, when petals are fused together, the term used is "gamopetalus."

...