Mechanical carrier for amoebic dysentery is :-

Answer

**Step-by-Step Solution:**

1. **Understand the Concept of Mechanical Carriers**: Mechanical carriers are organisms that transport pathogens from one host to another without the pathogen undergoing any development or multiplication within the carrier's body. They simply carry the pathogens on their body surfaces, such as feet or body hair.

2. **Identify the Causative Agent of Amoebic Dysentery**: The disease amoebic dysentery is caused by a protozoan parasite known as *Entamoeba histolytica*. This is the organism responsible for the infection.

3. **Determine the Mechanical Carrier for Amoebic Dysentery**: In the case of amoebic dysentery, the mechanical carrier is identified as house flies. House flies can carry the *Entamoeba histolytica* from feces of an infected person and contaminate food and water sources.

4. **Explain the Transmission Process**: House flies land on feces that contain the cysts of *Entamoeba histolytica*. They can then transfer these cysts to food and water, leading to new infections when consumed by humans.

5. **Conclude the Answer**: Therefore, the mechanical carrier for amoebic dysentery is the house fly.

**Final Answer**: House flies.

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