Question

which of the following is a mismatch?
A) AIDS- bacterial infection
B) Elephantiasis- Helminth infection​
C) Polio- Viral infection
D) Malaria- Protozoan infection

Answer 1

Hint: Disease is any abnormal condition of our body which affects the physiology and functioning of our body. The disease is caused by causative agents like bacteria, protozoa, virus etc. The diseases caused by viruses are difficult to treat.

Complete answer:
To solve this question, we must know about the causative agents of the diseases given in the question.
A) AIDS- AIDS stands for Acquired Immune Deficiency Syndrome. It is a viral disease caused by HIV (Human immunodeficiency virus). It is transmitted through bodily fluids, contaminated blood or by having sexual contact with an infected partner. AIDS is a life-threatening disease. It destroys the immune system by reducing the ability to fight diseases.
B) Elephantiasis- It is a tropical disease which affects the lymph node and vessels. It is identified by the swelling of the limbs or body parts. This disease is caused by a parasitic worm called helminth. The disease can be treated by using anti-parasitic drugs. Care should be taken to prevent bacterial and fungal growth.
C) Polio- It is a viral disease which affects the central nervous system. It weakens the muscles and causes flaccid paralysis. It is transmitted through contaminated water, food or having contact with an infected person. It can be prevented by the use of vaccines.
D) Malaria- Malaria is a life-threatening disease which is transmitted through female Anopheles mosquitoes. The mosquito carries a protozoa called the Plasmodium vivax. The mosquito bite releases the organism into the bloodstream. It can be treated with anti-malarial drugs.

Thus the correct answer is option ‘A’

Note: Protozoa are single celled eukaryotes which can be free living or parasitic. They feed on organic matter, debris, microorganisms and other organic tissues. Malaria is mostly epidemic to the places where the places are damp and moist. Protozoa affects the host both internally and externally.