What is true about Trypanosoma?

Options

A. Polymorphic
B. Monogenetic
C. Facultaitve parasite
D. Non-pathogenic

Explanation

To determine what is true about Trypanosoma, we will evaluate each of the provided statements one by one.

### Step-by-Step Solution:

1. **Evaluate the First Statement: Polymorphic**
- Trypanosoma is indeed polymorphic. This means it can exist in multiple forms. Specifically, Trypanosoma has at least four recognized forms based on the positions of its kinetoplast and blepharoplast, as well as the course taken by its flagellum. The forms include:
- Leishmanial
- Leptomonad
- Crithedial
- Trypanosomoid
- **Conclusion**: This statement is true.

2. **Evaluate the Second Statement: Monogenetic**
- This statement is incorrect. Trypanosoma is digenetic, meaning it requires two hosts to complete its life cycle. The primary host is typically humans, while the secondary host is the tsetse fly (scientific name: Glossina palpalis).
- **Conclusion**: This statement is false.

3. **Evaluate the Third Statement: Facultative Parasite**
- This statement is also incorrect. Trypanosoma is classified as an obligate parasite, which means it cannot complete its life cycle without a host. In contrast, facultative parasites can complete their life cycle without a host.
- **Conclusion**: This statement is false.

4. **Evaluate the Fourth Statement: Non-pathogenic**
- This statement is false. Trypanosoma is pathogenic and can cause serious diseases in various hosts, including humans. It is known for causing diseases such as African sleeping sickness.
- **Conclusion**: This statement is false.

### Final Conclusion:
The only true statement about Trypanosoma is that it is **polymorphic**.

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