The condition of fusion of filaments as well as anthers is

Options

A. Gynandrous
B. Synandrous
C. Syngenesious
D. Protandrous

Answer

To determine the condition of fusion of filaments as well as anthers, we will analyze each option provided in the question step by step.

### Step-by-Step Solution:

1. **Understanding the Terms**:
- First, we need to understand what is meant by the fusion of filaments and anthers. The filament is the stalk that supports the anther, which is the part of the stamen that produces pollen.

2. **Evaluating the First Option - Gynandrus**:
- The term "Gynandrus" refers to a condition where the stamens (which include filaments and anthers) are fused with the carpels (the female reproductive part).
- **Conclusion**: This option is incorrect because it does not refer to the fusion of filaments and anthers.

3. **Evaluating the Second Option - Sinandrus**:
- The term "Sinandrus" describes a condition where the stamens are fused along their entire length, including both the anthers and filaments.
- **Conclusion**: This option is correct as it specifically indicates the fusion of both filaments and anthers.

4. **Evaluating the Third Option - Syngenesis**:
- In "Syngenesis," the anthers are fused together, but the filaments remain free.
- **Conclusion**: This option is incorrect because it does not involve the fusion of filaments.

5. **Evaluating the Fourth Option - Protandrous**:
- "Protandrous" refers to a condition where the male reproductive parts mature before the female parts.
- **Conclusion**: This option is also incorrect as it does not relate to the fusion of filaments and anthers.

6. **Final Conclusion**:
- After evaluating all the options, the correct answer is that the condition of fusion of filaments as well as anthers is called **Sinandrus**.