Mark the odd one (w.r.t. poaceae)

Options

A. Orchids
B. Avena
C. Pennisetum.
D. Secale

Answer

To solve the question "Mark the odd one (w.r.t. Poaceae)", we need to analyze the options provided and identify which one does not belong to the Poaceae family, also known as the grass family.

### Step-by-Step Solution:

1. **Understand the Poaceae Family**:
- The Poaceae family, commonly referred to as the grass family, includes monocotyledonous flowering plants. This family encompasses a variety of grasses, bamboos, and cereal crops.

2. **Identify the Options**:
- The options provided in the question include:
- Triticum (Wheat)
- Pennisetum (Fountain Grass)
- Avena (Oats)
- Orchids

3. **Analyze Each Option**:
- **Triticum**: This is the genus for wheat, which is a type of grass and belongs to the Poaceae family.
- **Pennisetum**: Commonly known as fountain grass, this also belongs to the Poaceae family.
- **Avena**: Known as oats, this is another type of grass that belongs to the Poaceae family.
- **Orchids**: This refers to the family Orchidaceae, which is entirely different from the Poaceae family.

4. **Identify the Odd One Out**:
- Among the options, **Orchids** is the only one that does not belong to the Poaceae family. Instead, it belongs to the Orchidaceae family.

5. **Conclusion**:
- The odd one out with respect to the Poaceae family is **Orchids**.

### Final Answer:
- **Orchids** is the odd one out with respect to the Poaceae family.