Question

Carrier of malaria-causing protozoan is

• A. Female Anopheles mosquito
• B. Cockroach
• C. Housefly
• D. Butterfly

Answer 1

The correct option is A

Female Anopheles mosquito

The correct option is A.

Explanation of the correct option:

1. The Carrier of malaria-causing protozoan is the female anopheles mosquito.
2. Malaria is caused by protozoan Plasmodium.
3. Protozoans are unicellular eukaryotes that have relatively complex internal structures and can process some of the complex metabolic activities.
4. Female anopheles mosquitoes transfer Plasmodium from an unhealthy individual to a healthy individual.
5. The female anopheles mosquito sucks blood from the infected and then bites the uninfected person to whom the disease is transferred.
6. Humans and mosquitoes are hosts of the Plasmodium.

Explanation of the incorrect options:

Option B:

1. Cockroaches are insects that are commonly found in warm environments.
2. So they can be found in houses and buildings.
3. Cockroaches are carriers of intestinal diseases such as dysentery, diathermia, typhoid fever, etc.
4. But it does not carry malaria.

Option C:

1. Houseflies are insects that can be seen in close association with humans.
2. Flies are considered potential carriers of microorganisms since feeding on garbage and other bacteria-laden materials.
3. They spit up their stomach contents on surfaces with which humans may make frequent contact.

Option D:

1. Butterflies are insects that are at their adult flying stage.
2. They are not usually carriers of any disease but there are certain diseases like epidermolysis bullosa caused by the butterfly.

Final answer: Carrier of malaria-causing protozoan is female Anopheles mosquito.