When flowers are unisexual then emasculation is done in :-

Options

A. Female
B. Male
C. 1 & 2 both
D. none of these

Answer

### Step-by-Step Solution:

1. **Understanding Unisexual Flowers**:
- Unisexual flowers are those that contain only one type of reproductive organ, either male (stamens) or female (carpels). This means they cannot self-pollinate because they lack the necessary parts to do so.

2. **Definition of Emasculation**:
- Emasculation is the process of removing the male reproductive parts (stamens) from a flower. This is typically done in bisexual flowers to prevent self-pollination and to facilitate controlled cross-pollination.

3. **Application of Emasculation**:
- In the case of unisexual flowers, since they are either male or female, emasculation is not necessary. If a flower is male, it does not have carpels, and if it is female, it does not have stamens. Therefore, there is no risk of self-pollination.

4. **Conclusion**:
- Since emasculation is not applicable to unisexual flowers, the correct answer to the question is that emasculation is done in "none of these" (option D).

### Final Answer:
- The correct option is **D: none of these**.