In which of following for artifical hybridisation there is no need for emasculation

Options

A. Castor
B. Maize
C. Papaya
D. All

Answer

To solve the question regarding which of the following plants does not require emasculation for artificial hybridization, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Emasculation**: Emasculation is the process of removing the male reproductive parts (anthers) from a flower to prevent self-fertilization. This is typically done in bisexual plants where both male and female parts are present.

2. **Identify Plant Types**: We need to evaluate the options provided to determine whether they are unisexual or bisexual:
- **Castor**: Castor plants are unisexual, meaning they have either male or female flowers but not both on the same plant. Therefore, emasculation is not necessary.
- **Maize**: Maize (corn) is also unisexual. It has separate male (tassels) and female (ears) flowers on different plants. Thus, emasculation is not required.
- **Papaya**: Papaya plants can be unisexual as well, with male, female, and hermaphrodite forms. In the case of unisexual papaya, emasculation is not needed.

3. **Conclusion**: Since all the options (Castor, Maize, and Papaya) are unisexual plants, emasculation is not required for artificial hybridization in any of these cases. Therefore, the answer is that emasculation is not needed for all the listed plants.

### Final Answer:
All the plants listed (Castor, Maize, and Papaya) do not require emasculation for artificial hybridization.

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