Biology · Science General

Disease Causative Agents

2,531 Questions

Disease causative agents questions test your understanding of viral, bacterial, and fungal infections, along with their transmission methods. These are common topics in general science sections of SSC and railways exams. Practice these questions to accurately identify disease pathogens and symptoms.

Viral diseasesFoodborne illnessesDisease transmission methodsExtrinsic disease factorsCommon pathogens

Disease Causative Agents Questions

Multiple choice civics public health and the government role of the government in health food security and related aspects food security

We need safe drinking water to prevent which of the following water-borne disese, which is prevalent in India?

  1. diarrhoea

  2. dysentery

  3. cholera

  4. all of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

India has one of the largest number of cases of diseases such as diarrhoea, dysentery, cholera. Over 1,600 Indians, most of them children below the age of five, reportedly die everyday because of water-related diseases. These deaths can be prevented if  people have access to safe drinking water. 

Multiple choice biology kingdom monera, protista and fungi mycorrhiza classification of fungi useful and harmful microbes

St. Anthony's fire disease is caused by :

  1. Bacteria

  2. Fungus

  3. Nematode

  4. Polychaete
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Ergotism is the effect of long-term ergot poisoning, traditionally due to the ingestion of the alkaloids produced by the Claviceps purpurea fungus that infects rye and other cereals, and more recently by the action of a number of ergoline-based drugs.

So, the correct answer is 'Fungus'

Multiple choice botany bacteria bacteria - friend and foe useful and harmful bacteria bacteria; benefits and harmful effects

Which of the following disease is caused by Salmonella?

  1. Polio

  2. T.B

  3. Tetanus

  4. Typhoid
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Typhoid is a bacterial infection that is caused by the bacteria Salmonella typhi. Symptoms include high fever, diarrhea, vomiting, headache, abdominal pain. It is spread by food or water contaminated with the feces of an infected person. 

Thus, the correct answer is 'Typhoid.'

Multiple choice botany bacteria bacteria - friend and foe useful and harmful bacteria bacteria; benefits and harmful effects

Citrus canker is a plant disease caused by a microorganism which belongs to group 'X'. The other microorganism of this group are responsible for causing human disease like

  1. Measkes and polio

  2. Hepatitis A and chicken

  3. Typhoid and polio

  4. Tuberculosis and cholera
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
  • Citrus canker is a disease that affects citrus species caused by the bacterium Xanthomonas axonopodis.
  • The bacteria causing diseases in humans are- Tuberculosis and cholera.
  • Cholera is caused by the bacterium Vibrio cholera.
  • Tuberculosis is caused by Mycobacterium tuberculosis. 
Multiple choice botany bacteria bacteria - friend and foe useful and harmful bacteria bacteria; benefits and harmful effects

Identify the disease caused by bacteria from the following

  1. Amoebic dysentery

  2. Arthritis

  3. Beri-beri

  4. Diphtheria
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Amoebic dysentery is caused by Entamoeba histolytica, a protozoan parasite.  Arthritis is an inflammation of joints. It is caused by attack on immune system, injury or metabolic abnormalities. Beriberi is a disease caused by a vitamin B$ _1$ deficiency. Diphtheria is an infectious disease caused by the bacterium Corynebacterium diphtheriae. 

Thus, the correct answer is 'Diphtheria.'

Multiple choice botany bacteria bacteria - friend and foe useful and harmful bacteria bacteria; benefits and harmful effects

Identify a bacterial disease from the following.

  1. Tetanus

  2. Polio

  3. Filaria

  4. Malaria
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Tetanus is also called as lockjaw. It is a disease caused by bacterium Clostridium tetani. It affects the nerves that control the muscle movements. Symptoms include difficulty swallowing, difficulty breathing, muscle spasm. Polio is a contagious disease caused by a poliovirus. It attacks the nervous system. It mainly affects the small children. Filaria is a parasitic disease caused by nematode parasites of the order Filariidae. It spreads by mosquitoes and black flies. Malaria is a disease is caused by Plasmodium protozoa. It is transmitted through the bite of the Anopheles mosquito. Symptoms include fever, aches, nausea.

Thus, the correct answer is 'Tetanus.'

Multiple choice botany bacteria bacteria - friend and foe useful and harmful bacteria bacteria; benefits and harmful effects

Which of the following organism can be a reason for abortion?

  1. Viruses

  2. Bacteria

  3. Mycoplasma

  4. Chlamydia
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Abortion is the method of ending the pregnancy by removal of either embryo or foetus. Chlamydia is a sexually transmitted infection. Chlamydia may result into Pelvic Inflammatory Disease (PID). It can lead to serious consequences like infertility, ectopic pregnancy and even abortion.

Thus, the correct answer is 'Chlamydia.'

Multiple choice botany bacteria bacteria - friend and foe useful and harmful bacteria bacteria; benefits and harmful effects

Trachoma is caused by

  1. Spirochaete

  2. Chlamydia

  3. Trichonympha

  4. Paramaecium
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Trachoma is an infectious disease caused by bacterium Chlamydia trachomatis. It results in the roughening of the inner surface of the eyelids. The symptoms include pain in the eyes, itching and irritation in the eyes, blindness. It is a contagious disease.

Thus, the correct answer is 'Chlamydia.'

Multiple choice botany bacteria bacteria - friend and foe useful and harmful bacteria bacteria; benefits and harmful effects

The infectious and contagious bacterial disease that affects cattle, buffaloes, horses, sheep and goats is

  1. Anthrax

  2. Necrosis

  3. Tick fever

  4. Rinderpest
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Anthrax is an infectious disease caused by bacterium Bacillus anthracis. It mainly affects rudiments like cattle, buffaloes, horses, sheep. It rarely occurs in humans. Symptoms include sore throat, mild fever, fatigue, muscle aches.

Thus, the correct answer is 'Anthrax.'

Multiple choice botany bacteria bacteria - friend and foe useful and harmful bacteria bacteria; benefits and harmful effects

Gas gangrene is caused by

  1. Streptococcus pyrogenes

  2. Treponema pallidum

  3. Clostridium perfringens

  4. Salmonella dublin
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Gas gangrene is caused by the Clostridium perfringens bacterium. This produces gas in tissues in gangrene. It results in the swelling.  The skin turns pale to brownish-red. 

Thus, the correct answer is 'Clostridium perfringens.'

Multiple choice botany bacteria bacteria - friend and foe useful and harmful bacteria bacteria; benefits and harmful effects

Food poisoning is caused by

  1. Salmonella typhi

  2. Escherichia coli

  3. Clostridium botulinum

  4. Yersinia pestis
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Food poisoning or botulism is caused by Clostridium botulinum. It is an anaerobic bacterium. The bacterium infects canned food. The poisoning is accompanied by diarrhoea and vomiting. Common food poisoning is caused by Staphylococcus aureus.

Multiple choice botany bacteria bacteria - friend and foe useful and harmful bacteria bacteria; benefits and harmful effects

A bacterial disease is

  1. Tetanus

  2. Polio

  3. Filaria

  4. Malaria.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Tetanus is a bacterial disease. It is also known as Lock Jaw. Tetanus is caused by Clostridium tetani. It is a bacilus bacteria.
Polio is a viral disease. It is also known as poliomylelitis. It is caused by polio virus. The virus spreads from person to person.
Filaria is a parasitic diseases which is transmitted by mosquito and flies. It is caused by Wucheria bancrofti and Wucheria malayi.
Malaria is a protozoan disease. It is caused by a plasmodium. It is transmitted by female Anopheles mosquito.