Give special characters of wind-pollinated flowers.

Explanation

### Step-by-Step Solution

1. **Definition of Wind-Pollinated Flowers**: Wind-pollinated flowers are known as anemophilous flowers. This type of pollination occurs when pollen is transferred from the male part of a flower to the female part via the wind.

2. **Production of Pollen**: These flowers produce a large amount of pollen grains. This is necessary because wind is not a targeted pollination agent, leading to a significant loss of pollen as it disperses.

3. **Pollen Grain Characteristics**: The pollen grains of wind-pollinated flowers are typically smooth and light. This allows them to be easily carried by air currents.

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