Dust seeds are characteristic of some

Options

A. Orchids
B. Aroids
C. Gymnosperms
D. Lianas

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks which group of plants is characterized by having "dust seeds."

2. **Identifying the Options**: The options provided are:
- Orchids
- Aroids
- Gymnosperms
- Lianas

3. **Defining Dust Seeds**: Dust seeds are very small seeds that are typically lightweight and can be easily dispersed by wind. They are a characteristic feature of certain flowering plants.

4. **Analyzing Each Option**:
- **Orchids**: Orchids are known for their dust-like seeds, which are very small and can be carried by the wind. They have a spindle shape and consist of a thin seed coat enclosing a small embryo.
- **Aroids**: Although aroids are angiosperms, they do not have dust seeds as a characteristic feature.
- **Gymnosperms**: Gymnosperms do not produce dust seeds; they typically have larger seeds.
- **Lianas**: Lianas are climbing plants and are also gymnosperms, which do not have dust seeds.

5. **Conclusion**: Based on the analysis, the correct answer is **Orchids**, as they are the only group listed that is characterized by having dust seeds.

**Final Answer**: Orchids

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