Name a plant which is called living fossil.

Explanation

**Step-by-Step Solution:**

1. **Understanding the Term "Living Fossil":**
- A living fossil refers to a species that has remained relatively unchanged over a long period of geological time and is still alive today. These organisms often resemble their ancient relatives found in the fossil record.

2. **Identifying Examples of Living Fossils:**
- There are several plants that are considered living fossils, but one of the most notable examples is Ginkgo biloba.

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