When both sexes are absent from a flower or are non-functional, the flower is said to be

Options

A. neuter
B. incomplete
C. unisexual
D. imperfect

Answer

### Step-by-Step Solution:

1. **Understanding Flower Structure**:
- Flowers can have different reproductive structures, including male (stamens) and female (pistils) organs.

2. **Definition of Neuter Flowers**:
- When both male and female reproductive organs are absent or non-functional in a flower, such flowers are classified as neuter.

3. **Characteristics of Neuter Flowers**:
- Neuter flowers may have undeveloped or non-functional sex organs.
- They can have pistils and stamens, but these parts are either non-functional or completely absent.

4. **Reproductive Strategy**:
- Neuter flowers typically reproduce asexually, meaning they do not require the fusion of male and female gametes.

5. **Example of Neuter Flowers**:
- An example of neuter flowers is the ray florets of sunflowers. While these florets are neuter, sunflowers also have bisexual florets (the disk florets).

6. **Conclusion**:
- Therefore, when both sexes are absent from a flower or are non-functional, the flower is said to be **neuter**.