Hydatid worm is

Options

A. Achhissoma indicum
B. Ancylostoma duodenale
C. Ecterobius vermicularis
D. Echincoccus granulosus

Answer

### Step-by-Step Solution:

1. **Understand the Question**: The question asks to identify which organism is referred to as the "Hydatid worm" from the given options.

2. **Identify the Options**: The options provided are:
- A) Ankyosoma Indicum
- B) Ankylostoma Diodenulae
- C) Ectidopias Vermicularis
- D) Echinococcus Granulosis

3. **Recall the Classification**: The Hydatid worm is classified under the phylum Platyhelminthes, which includes flatworms.

4. **Common Name Association**: The Hydatid worm is also commonly known as the "dog tapeworm."

5. **Scientific Name**: The scientific name for the Hydatid worm is Echinococcus granulosis.

6. **Match with Options**: Now, we need to match the scientific name with the options provided. The correct scientific name from the options is:
- D) Echinococcus Granulosis

7. **Conclusion**: Therefore, the correct answer to the question "Hydatid worm is" is option D) Echinococcus Granulosis.

### Final Answer:
The Hydatid worm is Echinococcus Granulosis (Option D).

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