Which one of the following is the vector for kala-azar disease?

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Q: 33 (IES/2011)
Which one of the following is the vector for kala-azar disease?

question_subject: 

Science

question_exam: 

IES

stats: 

0,62,67,20,62,38,9

keywords: 

{'aedes mosquito': [1, 0, 0, 1], 'anopheles mosquito': [1, 0, 0, 0], 'azar disease': [0, 0, 0, 1], 'sandfly': [1, 0, 1, 1], 'kala': [3, 0, 1, 1], 'housefly': [0, 0, 0, 3], 'vector': [0, 0, 0, 1]}

The correct answer is option 2: Sandfly. The sandfly is the vector for kala-azar disease, also known as visceral leishmaniasis. A vector is an organism that transfers a disease from one host to another. In the case of kala-azar, the sandfly acts as a carrier of the parasite called Leishmania donovani.

Option 1: Housefly is not the vector for kala-azar. Houseflies are known for transmitting other diseases like diarrhea and typhoid fever, but they do not play a role in spreading kala-azar.

Option 3: Aedes mosquito is not the vector for kala-azar. Aedes mosquitoes are known for transmitting diseases such as dengue fever and Zika virus, but they are not involved in the transmission of kala-azar.

Option 4: Anopheles mosquito is also not the vector for kala-azar. Anopheles mosquitoes are widely known for transmitting malaria, but they do not play a role in spreading kala-azar.

Therefore, the correct vector for kala-azar disease is the sandfly, which is responsible for transmitting the parasite to humans through its bite.