Which of the following traits helps in wind dispersal

Options

A. Barbs and hooks
B. Hair and wings
C. Sticky glands
D. Round and compact seeds

Answer

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks which trait helps in wind dispersal of seeds. We need to analyze the given options to determine which one is suitable for this method of seed dispersal.

2. **Analyzing the Options**:
- **Option A: Bars and Hooks**: These traits are typically found in seeds that attach to animals for dispersal, not for wind dispersal.
- **Option B: Hair and Wings**: Seeds with hair-like or wing-like structures are designed to be lightweight and can stay airborne longer, making them ideal for wind dispersal.
- **Option C: Sticky Glands**: These are adaptations for seed dispersal by animals, as they help seeds stick to the fur or skin of animals.
- **Option D: Round and Compact Seeds**: These seeds are generally heavier and not suited for wind dispersal, as they lack the features necessary to be carried by the wind.

3. **Identifying the Correct Answer**: Based on the analysis, the correct answer is **Option B: Hair and Wings**, as these traits are specifically adapted for wind dispersal.

4. **Conclusion**: The seeds that have hair-like or wing-like structures are lightweight and can be carried by the wind, making them suitable for dispersal through this method.