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प्रश्न
What is Kala-azar?
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उत्तर
Kala - azar or visceral leishmaniasis is caused by Leishmania donovani, which is transmitted by the vector Phlebotomus. Infection may occur in the endothelial cells, bone marrow, liver, lymph glands andblood vessels of the spleen. Symptoms of Kala azar are weight loss, anaemia, fever, enlargement of spleen and liver.
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संबंधित प्रश्न
Study a part of the life cycle of malarial parasite given below. Answer the questions that follow:
(a) Mention the roles of ‘A’ in the life cycle of the malarial parasite.
(b) Name the event ‘C’ and the organ where this event occurs.
(c) Identify the organ ‘B’ and name the cells being released from it.
Show with the help of a flow chart only, the life cycle of malarial parasite in humans.
Name two diseases whose spread can be controlled by the eradication of Aedes mosquitoes.
Match the pathogens with respective diseases caused by them and select the correct match using the codes given below.
| Column I | Column II |
| I. Leishmania donavani | 1. Malaria |
| II. Wuchereria bancrofti | 2. Amoebiasis |
| III. Trypanosoma gambiense | 3. Kala - azar |
| IV. Entamoeba histolytica | 4. Sleeping sickness |
| 5. Filariasis |
Write the scientific name of the filarial worm that causes filariasis.
Why do you think it is not possible to produce vaccine against 'common cold'?
The active form of entamoeba histolytica feed upon:
Which of the following is a pair of viral diseases?
Explain any three preventive measures to control microbial infections.
Ringworm is one of the most common infectious fungal disease in humans. Name any two genera of fungi which cause ringworm.
