indiadigital
Home / Abhyas / Abhyas Prep: Science and Technology (UPSC and MPSC) / Diseases and pathogens
ABHYAS PREP: SCIENCE AND TECHNOLOGY (UPSC AND MPSC) · HEALTH

Diseases and pathogens

Whether a disease comes from a bacterium, virus, protozoan, fungus or worm.

Loading practice…

Worked examples

Example 1 · level 1

Which of these diseases is caused by a virus?

  1. Hepatitis B
  2. Sleeping sickness
  3. Tetanus
  4. Leprosy
Show solution
  1. Hepatitis B: Virus.
  2. Leprosy: Bacterium (Mycobacterium leprae).
  3. Tetanus: Bacterium (Clostridium tetani).
  4. Sleeping sickness: Protozoan (Trypanosoma, spread by the tsetse fly).
  5. Source: https://ncert.nic.in/textbook.php

Answer: Hepatitis B

Example 2 · level 2

Filariasis (elephantiasis) is caused by a:

  1. Bacterium
  2. Protozoan
  3. Fungus
  4. Parasitic worm
Show solution
  1. Filariasis (elephantiasis): Parasitic worm (a roundworm spread by the Culex mosquito).
  2. Ringworm: Fungus (not a worm at all).
  3. Cholera: Bacterium (Vibrio cholerae, spread through dirty water).
  4. Malaria: Protozoan (Plasmodium, spread by the female Anopheles mosquito).
  5. Source: https://ncert.nic.in/textbook.php

Answer: Parasitic worm

Example 3 · level 3

Consider the following pairs (Disease : Type of pathogen): 1. Ascariasis : Parasitic worm 2. Tetanus : Bacterium 3. Rabies : Virus How many of the pairs given above are correctly matched?

  1. Only one pair
  2. Only two pairs
  3. All three pairs
  4. None of the pairs
Show solution
  1. Pair 1 is correct: Ascariasis: Parasitic worm (the roundworm Ascaris).
  2. Pair 2 is correct: Tetanus: Bacterium (Clostridium tetani).
  3. Pair 3 is correct: Rabies: Virus (spread by the bite of an infected animal).
  4. So 3 of the 3 pairs are correctly matched.
  5. Source: https://ncert.nic.in/textbook.php

Answer: All three pairs

My Desk

Private: history and progress stay on this device.

Search by task, life event, format or tool name, in English, हिंदी or Hinglish.