Ecdysone/moulting hormone is produced by

Options

A. Prothoracic gland
B. Corpora allata
C. Corpora cardiaca
D. Abdominal gland

Answer

**Step-by-Step Solution:**

1. **Understanding Ecdysone**: Ecdysone, also known as the moulting hormone, is a steroid hormone that plays a crucial role in the process of molting and metamorphosis in insects.

2. **Identifying the Source**: The question asks where ecdysone is produced. The options given are:
- Prothoracic gland
- Corpora alata
- Corpora cardiaca
- Abdominal gland

3. **Analyzing the Options**:
- **Prothoracic gland**: This gland is known to produce ecdysone, which is essential for molting in insects.
- **Corpora alata**: This gland secretes juvenile hormone, which regulates the development and maturation of insects.
- **Corpora cardiaca**: This gland produces prothoracicotropic hormone (PTTH), which stimulates the prothoracic gland to release ecdysone.
- **Abdominal gland**: This gland is associated with the secretion of gastrin, which is not related to ecdysone.

4. **Conclusion**: Based on the functions of the glands, it is clear that the ecdysone/moulting hormone is produced by the **prothoracic gland**.

5. **Final Answer**: The correct answer is **prothoracic gland**.

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