In the kingdoms ……….. and ........, the cell is a complete organism.

Explanation

**Step-by-Step Solution:**

1. **Identify the Kingdoms**: The question asks for two kingdoms where a single cell functions as a complete organism. The two kingdoms that fit this description are Monera and Protista.

2. **Understand Unicellularity**: In both Monera and Protista, the organisms are unicellular, meaning they consist of a single cell that performs all necessary life functions.

3. **Characteristics of Organisms in These Kingdoms**:
- **Monera**: This kingdom includes organisms like bacteria, which are prokaryotic and lack membrane-bound organelles.
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