Why do we believe chloroplast and mitochondria to be semi-autonomous organelles?

Explanation

**Step-by-Step Solution:**

1. **Definition of Semi-Autonomous Organelles**:
- Semi-autonomous organelles are those that can perform some functions independently but still rely on the cell for certain processes.

2. **Chloroplasts and Mitochondria**:
- Both chloroplasts and mitochondria are double membrane-bound organelles found in eukaryotic cells. Chloroplasts are primarily involved in photosynthesis, while mitochondria are known as the powerhouse of the cell due to their role in energy production.

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