A flower may have either male or female reproductive parts. Such a flower is called _________.

Explanation

**Step-by-Step Solution:**

1. **Understanding Flower Structure**: Flowers can have different reproductive parts. The male reproductive part is called the stamen, and the female reproductive part is called the carpel.

2. **Identifying Flower Types**: Flowers can be classified based on the presence of these reproductive parts. Some flowers have both male and female parts, while others have only one type.

3. **Defining Unisexual Flowers**: A flower that has either male or female reproductive parts, but not both, is referred to as a unisexual flower.

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