Cestodes have

Options

A. A ribbon like body
B. A scolex with suckers and hooks
C. Numerous proglottids
D. All of the above

Answer

**Step-by-Step Solution:**

1. **Identify the Class and Phylum**: Cestodes belong to the class Cestoda, which is part of the phylum Platyhelminthes. This is important as it establishes their biological classification.

2. **Understand Their Nature**: Cestodes are endoparasitic worms, meaning they live inside the host organism. They primarily affect the intestines of their hosts, including humans.

3. **Examine the Structure**: The structure of Cestodes, such as the common examples Tenia solium (pork tapeworm) and Tenia saginata (beef tapeworm), includes:
- A **scolex** (head) that has suckers and sometimes hooks, which helps them attach to the intestinal wall of the host.
- A **ribbon-like body** that is flat, which is characteristic of tapeworms.

4. **Proglottids**: The body of Cestodes is made up of segments called proglottids. These segments contain reproductive organs and are responsible for producing eggs. The proglottids can be numerous, and they are shed from the body over time.

5. **Conclusion**: Based on the characteristics of Cestodes:
- They have a ribbon-like body.
- They possess a scolex with suckers and hooks.
- They have numerous proglottids containing reproductive structures.

Thus, all the statements regarding Cestodes are correct, leading to the conclusion that the correct answer is "all of the above."

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