Which of the following is an example of a microorganism in action as a disease vector?
A. Fungi decomposing dead plant material B. Mosquito transmitting malaria C. Bacteria causing food poisoning D. Algae producing oxygen through photosynthesis
Correct Answer: B
Explanation
A disease vector is an organism that transmits disease-causing pathogens from one host to another. Female Anopheles mosquitoes can carry and transmit the Plasmodium parasite, which causes malaria. When an infected mosquito bites a person, it injects the parasite into the bloodstream, leading to the transmission of the disease.
