Peritrophic membrane is secreted by

Options

A. crop
B. gizzard
C. mid gut
D. ileum

Answer

**Step-by-Step Solution:**

1. **Understanding the Peritrophic Membrane**: The peritrophic membrane is a protective layer found in the digestive system of certain insects, including the cockroach. It serves to protect the gut lining from abrasive food particles.

2. **Identifying the Location**: In cockroaches, the alimentary canal consists of several parts: the esophagus, crop, gizzard, midgut (mesenteron), and ileum. The peritrophic membrane is specifically associated with the midgut.

3. **Role of the Gizzard**: The gizzard is a muscular structure that grinds food. It has chitinous plates that help in this grinding process but does not secrete the peritrophic membrane.

4. **Function of the Midgut**: The midgut, or mesenteron, is where the peritrophic membrane is formed. It is responsible for the secretion of this membrane, which envelops the food balls and protects the gut lining.

5. **Conclusion**: The peritrophic membrane is secreted by the glandular cells located in the anterior part of the mesenteron (midgut) of the cockroach.

6. **Final Answer**: Therefore, the correct answer to the question "Peritrophic membrane is secreted by" is **Midgut** (option C).

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