From which stage of silk moth, the silk is obtained?

Options

A. (a) Adult
B. (b) Caterpillar
C. (c) Egg
D. (d) Pupa

Answer

**Step-by-Step Solution:**

1. **Identify the Silk Moth Life Cycle**: The silk moth undergoes several stages in its life cycle, which include the egg, larva (caterpillar), pupa, and adult moth.

2. **Focus on the Pupa Stage**: The silk is specifically obtained from the pupa stage of the silk moth. During this stage, the pupa encases itself in a protective cocoon.

3. **Cocoon Formation**: The pupa weaves a cocoon around itself. This cocoon is made of silk fibers produced by the pupa.

4. **Silk Extraction Process**: To extract silk, the cocoons are boiled, which kills the pupa and allows the long silk threads to be unwound from the cocoon.

5. **Conclusion**: Therefore, the silk is obtained from the pupa stage of the silk moth, specifically from the cocoon that the pupa forms.

**Final Answer**: The silk is obtained from the pupa stage of the silk moth.

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