Wind pollination requires that the pollen grains are

Options

A. Light and non-sticky
B. Heavy and sticky
C. Light and sticky
D. Heavy and non-sticky

Answer

To answer the question "Wind pollination requires that the pollen grains are," we can follow these steps:

### Step-by-Step Solution

1. **Understand Pollination**: Pollination is the process where pollen grains are transferred from the male part of the flower (anther) to the female part (stigma). This is crucial for fertilization and reproduction in flowering plants.

2. **Identify the Type of Pollination**: The question specifically refers to wind pollination. This type of pollination relies on wind to carry pollen grains from one flower to another.

3. **Characteristics of Pollen Grains for Wind Pollination**:
- Pollen grains need to be **light**: This allows them to be easily carried by the wind over long distances.
- Pollen grains need to be **non-sticky**: If they were sticky, they would adhere to surfaces rather than being carried away by the wind.

4. **Evaluate the Options**:
- **Light and non-sticky**: This option aligns with the characteristics needed for wind pollination.
- **Heavy and sticky**: This would make it difficult for the pollen to be carried by the wind.
- **Light and sticky**: While light, the stickiness would prevent effective wind transport.
- **Heavy and non-sticky**: The heaviness would hinder wind transport.

5. **Conclusion**: Based on the analysis, the correct answer is that for wind pollination, pollen grains must be **light and non-sticky**.

### Final Answer
The correct option is **light and non-sticky**.

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