Each cocoon of silk moth has about

Options

A. 800 metres of silk thread
B. 900 metres of silk thread
C. 1000 metres of silk thread
D. 1500 metres of silk thread

Answer

To solve the question regarding the amount of silk thread produced by each cocoon of a silk moth, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Question**: The question asks how much silk thread is produced by each cocoon of a silk moth.

2. **Review the Options**: The options provided are:
- 800 meters of silk thread
- 900 meters of silk thread
- 1000 meters of silk thread
- 1500 meters of silk thread

3. **Recall Information**: From the knowledge of silk production, it is known that the silk moth, particularly the mulberry silkworm (Bombyx mori), produces a significant amount of silk.

4. **Determine the Correct Answer**: Based on the information provided, it is stated that each cocoon of the silk moth produces approximately 900 meters of silk thread.

5. **Conclusion**: Therefore, the correct answer to the question is that each cocoon of silk moth has about **900 meters of silk thread**.