Give the scientific names of the following:
structure formed by the germinating fern spore.

Explanation

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the scientific name of the structure that is formed by the germinating spore of a fern.

2. **Identifying the Structure**: When a fern spore germinates, it develops into a structure called the prothallus.

3. **Scientific Name**: The scientific name for the structure formed by the germinating fern spore is "Prothallus" or "Prothelium".

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