In which part of alimentary canal hepatic caecae are present?

Answer

**Step-by-Step Solution:**

1. **Understanding Hepatic Caeca**: Hepatic caeca are structures in the cockroach's alimentary canal that consist of 6 to 8 blind tubules. They play a crucial role in digestion by secreting digestive juices.

2. **Identifying the Alimentary Canal**: The alimentary canal of a cockroach is divided into three main parts: the foregut, midgut (mesenteron), and hindgut.

3. **Locating Hepatic Caeca**: The hepatic caeca are located at the junction between the foregut and the midgut. This means they are positioned where the foregut ends and the midgut begins.

4. **Conclusion**: Therefore, the hepatic caeca are present in the alimentary canal of the cockroach at the junction of the foregut and midgut.

**Final Answer**: Hepatic caeca are present at the junction of the foregut and midgut in the alimentary canal of the cockroach.

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