Which of the following does not belong with the others?Group of answer choicesLeishmaniaGiardia lambiaTrypanosomaBalantidium coliTrichomonas vaginalisNext

To determine which of the following organisms does not belong with the others, we need to analyze their classifications and characteristics:

1. Leishmania: A genus of protozoa that cause leishmaniasis, transmitted by sand flies.
2. Giardia lamblia: A protozoan parasite that causes giardiasis, primarily contracted through contaminated water.
3. Trypanosoma: A genus of protozoa that includes species causing diseases such as African sleeping sickness and Chagas disease, transmitted by tsetse flies and triatomine bugs, respectively.
4. Balantidium coli: A ciliated protozoan parasite that causes balantidiasis, typically transmitted through contaminated food or water.
5. Trichomonas vaginalis: A flagellated protozoan that causes trichomoniasis, primarily transmitted through sexual contact.

Analyzing the Group:

• Leishmania, Giardia lamblia, Trypanosoma, Balantidium coli, and Trichomonas vaginalis are all protozoan parasites.
• However, Balantidium coli is a ciliated protozoan, while the others (Leishmania, Giardia lamblia, Trypanosoma, and Trichomonas vaginalis) are classified as flagellated or non-motile (like certain forms of Leishmania).

Conclusion:

Thus, the organism that does not belong with the others is Balantidium coli, as it is the only ciliated protozoan in the group.