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 evs let's clean together cleanliness who will do this work? personal and public cleanliness

Which of the following diseases can be prevented with proper sanitation?

  1. Malaria

  2. Dengue

  3. Cholera

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

Lack of sanitation results in contamination of water, food and soil. Proper sanitation practices will result in proper disposal of waste and reduce contamination of water and food to a large extent. The list of diseases that could be reduced with proper access to sanitation and hygiene practices is very long some of which can be Hepatitis, cholera, dengue, malaria, malnutrition, typhoid etc. Polio is another disease which is related to improper sanitation and hygiene. 

Therefore, the correct answer is option D.

Multiple choice evs let's clean together cleanliness who will do this work? personal and public cleanliness

Lack of daily exercise can cause

  1. Fever

  2. Pneumonia

  3. Typhoid

  4. Diabetes
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
  • A sedentary lifestyle and lack of physical activity can contribute to or be a risk factor for:
  1. Anxiety.
  2. Cardiovascular disease.
  3. Migraines.
  4. Colon cancer.
  5. Depression.
  6. Diabetes. 
  • Hence, Lack of daily exercise can cause Diabetes.
  • So, the correct answer is 'Diabetes'.
Multiple choice evs let's clean together cleanliness who will do this work? personal and public cleanliness

Fecal transmission of diseases can be reduced by

  1. Medical check-up

  2. Frequent hand washing

  3. Both B and D

  4. Proper sewage disposal
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Fecal or oral transmission can be prevented by proper sewage treatments, water filtration before use, thorough hand washing, good hygiene practices, and public awareness, etc. Therefore, (c) is the correct answer.

Multiple choice biology animals in daily life animal breeding animal husbandry and its importance introduction to animal husbandry

Bird flu is also known as

  1. Avian influenza.

  2. Hepatitis A.

  3. Hepatitis B.

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

Avian influenza caused by infection with avian (bird) influenza (flu) Type A viruses. These viruses occur naturally among wild aquatic birds worldwide and infect domestic poultry and other bird and animal species. 

So, the correct answer is 'Avian influenza'

Multiple choice zoology some common diseases diseases caused by protozoa protozoan disease protozoa: benefits and harmful effects

Given below is a list of few sexually transmitted diseases. Identify the diseases caused by bacteria among these.
(i) Gonorrhoea,  (ii) Giardiasis,  (iii) Trichomoniasis,  (iv) Chancroid,  (v) Syphilis

  1. (i) and (ii)

  2. (i), (iv) and (v)

  3. (iii) and (v)

  4. (ii), (iii) and (iv)
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Gonorrhoea is caused by Neisseria gonorrhoeae. Chancroid, is caused by Haemophilus ducreyi. Syphilis is caused by Treponema pallidum. Giardiasis and trichomoniasis are protozoan diseases.

Multiple choice zoology some common diseases diseases caused by protozoa protozoan disease protozoa: benefits and harmful effects

Which of the following is a communicable disease?

  1. Cancer

  2. Malaria

  3. Heart attack

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

Any disease that can be transferred from infected person to healthy is called as communicable disease such as malaria because malaria is caused by Plasmodium and transferred from infected to healthy by the help of vector i.e., mosquitoes. Whereas cancer (caused by abnormal cell growth), Heart attack (caused by abnormal metabolism) and diabetes (caused by abnormal secretion of hormone) are the non-communicable disease

Multiple choice zoology some common diseases diseases caused by protozoa protozoan disease protozoa: benefits and harmful effects

Which option is correct for the disease caused by protozoans?

  1. Treponema pallidum - White patches on the tongue or roof of the buccal cavity

  2. Herpes simplex - Itching in the genital or and area

  3. Neisseria gonorrhoeae - Pain during passing urine

  4. Trichomonas vaginalis - Pain during passing urine
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Trichomonas vaginalis is an anaerobic protozoan parasite. It causes trichomoniasis. It is a sexually transmitted infection. Symptoms include inflammation, itching and soreness around vaginal area, changes in vaginal discharge like profuse, yellowish to greenish, frothy discharge and pain during passing urine. While Treponema and Neisseria are bacteria Herpes simplex is a virus. Thus, the correct answer is option D.

Multiple choice biology wastewater story basics of water pollution sewage treatment wastewater treatment - need and methods personal and public cleanliness who will do this? water borne disease hygiene - a key to healthy life

Which of the following is not a water borne disease?

  1. Diarrhoea

  2. Typhoid

  3. Hepatitis

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

Diarrhea, typhoid, and hepatitis are classic water-borne diseases. Conjunctivitis is an eye infection typically spread by direct contact or contaminated surfaces, not primarily through drinking water.

Multiple choice biology wastewater story basics of water pollution sewage treatment wastewater treatment - need and methods personal and public cleanliness who will do this? water borne disease hygiene - a key to healthy life

Disease caused by the use of untreated water is

  1. Tuberculosis

  2. Typhoid

  3. Cholera

  4. Both B and C
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Tuberculosis is caused due to Mycobacterium tuberculosis. It is caused due to the infection of lungs due to inhaling the contaminated air.
Typhoid is mainly caused due to bacteria Salmonella typhimurium. The intestine and bloodstream of humans is the main source of proliferation of bacteria. The direct contact with the untreated water containing the feces of an infected person is the main cause of the spread of the disease. 
Cholera is a disease which causes severe dehydration due to infection of the bacterium called Vibrio cholerae. Consumption of contaminated food and water mainly causes the disease. 
So, the correct answer is option D.
Multiple choice biology classification of plants monera five kingdoms of living organisms biodiversity and need of classification

Syphilis causing bacterium Treponema pallidum belongs to the group

  1. Rickettsiae

  2. Bacillus

  3. Actinomycetes

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

Treponema pallidum is a motile spirochaete bacterium that causes sexually transmitted disease syphilis.  It is a helically coiled microorganism. It belongs to the group Spirillum. It is a gram-negative bacteria. 

Thus, the correct answer is 'Spirillum'.

Multiple choice biology human health and disease drug, tobacco and alcohol consumption addiction and dependence community health and hygiene

Liver-cirrhosis is caused by

  1. Excess alcoholism

  2. No alcohol

  3. Due to bacterial infection

  4. Due to viral infection
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Cirrhosis is an abnormal liver condition in which there is irreversible scarring of the liver. The main causes are sustained excessive alcohol consumption and fatty liver disease. Symptoms include loss of appetite, yellowing of the skin, fluid retention (oedema) and swelling in ankles, legs and abdomen. So, the correct answer is option A.

Multiple choice evs who will do this? personal and public cleanliness basics of water pollution sewage treatment

An example of water-borne disease is 

  1. Scabies

  2. Influenza

  3. Trachoma

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

Typhoid is a classic example of a water-borne disease caused by the bacterium Salmonella Typhi, typically spread through contaminated water or food. Scabies is a skin infestation, influenza is respiratory, and trachoma is an eye infection.

Multiple choice oil, fibres, spices and medicine producing plants plant kingdom and the environment around us some important plants uses of plants as medicine

Nobel prize for medicine was given for confirming the role of Helicobacter pylori in causing

  1. Bronchitis

  2. Peptic ulcer

  3. Nephritis

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

Helicobacter pylori is a spiral shape bacteria that resides in the digestive tract ad attacks the stomach lining. It is responsible for peptic ulcers. It was discovered my Marshall and Warren in the stomach of patients with ulcers and so they were awarded nobel prize in 2005. 

Thus, the correct answer is option B.