The hypothesis of Ronald Ross relating to malaria was:
Correct answer: C. Mosquitoes are possible carriers of Plasmodium.
- A. Plasmodia are the cause of malaria.
- B. Bad air is involved in the spread of malaria.
- C. Mosquitoes are possible carriers of Plasmodium.
- D. Malaria is caused by bad air coming from marshy places.
Explanation
Ronald Ross's hypothesis and subsequent research demonstrated that mosquitoes, particularly the Anopheles species, are vectors for the Plasmodium parasite, which leads to malaria. This was a groundbreaking discovery because it identified the mosquito as the carrier rather than attributing the disease to environmental factors like bad air, as suggested by the miasma theory. The other options incorrectly focus on outdated or already known aspects of malaria transmission, rather than Ross's specific contribution.
This question appeared on the ETEA MDCAT 2011 paper, which you can sit online with every answer explained.
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