Question

Some micro-organisms are pathogenic because they cause diseases. Study the following table which shows a list of diseases in humans in Column X. In Column Y, the main causative agents of the diseases are listed in an incorrect sequence.
The correct sequence of the main causative agents, which match diseases (a), (b), (c)and (d) respectively, may be represented by

• A. III, II, IV, I
• B. III, IV, I, II
• C. I, IV, II, III
• D. IV, III, I, II

Answer 1

The correct option is B III, IV, I, II

Botulism or the food poisoning is caused by the bacterium Clostridium botulinum. The ingested food contaminated with this bacterium can result in the food poisoning due to the release of the endotoxin botulinum neurotoxin.

AIDS (Acquired Immunodeficiency syndrome) is caused by the human immunodeficiency virus (HIV). This is a sexually transmitted disease that can transfer by sexual contact, infected needles, etc.

Mycosis is the fungal infection of the skin caused by the Candida sp. These are the superficial infections called as dermatophytosis.

Malaria is caused by the parasitic protozoan Plasmodium. The disease is transmitted through the bite of the Anopheles female mosquitoes.

Thus, the correct answer is option B.