Which of the following plants is not present in order Gnetales?

Options

A. Ephedra
B. Metasequoia
C. Gnetum
D. Wetwitschia

Answer

To determine which plant is not present in the order Gnetales, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Order Gnetales**:
- Gnetales is a group of more advanced gymnosperms that share several features with angiosperms (flowering plants).
- The classification of Gnetales falls under the phylum Gnetophyta.

2. **Identify the Members of Gnetales**:
- The order Gnetales includes three main genera:
- **Ephedra**
- **Gnetum**
- **Welwitschia**
- Each of these genera belongs to its own family but is classified under the single order Gnetales.

3. **Examine the Options**:
- Now, we need to compare the given options with the known members of Gnetales.
- The options include:
- **Ephedra** (present in Gnetales)
- **Gnetum** (present in Gnetales)
- **Welwitschia** (present in Gnetales)
- **Metasequoia** (not present in Gnetales)

4. **Identify the Incorrect Option**:
- Among the options, **Metasequoia** is identified as a type of gymnosperm but does not belong to the order Gnetales.

5. **Conclusion**:
- Therefore, the plant that is not present in the order Gnetales is **Metasequoia**.

### Final Answer:
**Metasequoia**

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