The organs which lost their original function through evolution are known as ____.

Explanation

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the term used to describe organs that have lost their original function through the process of evolution.

2. **Identifying the Term**: The correct term for these organs is "vestigial organs."

3. **Definition of Vestigial Organs**: Vestigial organs are body parts that have diminished in size and function over time due to evolutionary changes. They may still be present in the body but do not serve any significant purpose.

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