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 animal diseases economic importance of bacteria and fungi bacteria keeping diseases away biology

According to the World Health Organisation, the disease which cause the death of the largest population today is

  1. AIDS

  2. Tuberculosis

  3. Malaria

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

Ebola virus disease is a disease of humans and other primates caused by Ebola viruses. There is currently no licensed treatment or vaccine for Ebola virus disease, although potential new vaccines and drug therapies are being developed and tested. 

Multiple choice animal diseases economic importance of bacteria and fungi bacteria keeping diseases away biology

Anthrax of sheep is caused by bacteria.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Anthrax refers to a contagious disease that is caused by a bacterium called the Bacillus anthracis. The disease mainly occurs in domestic and wild animals such as goats, cow, sheep, and camels. The infection is transmitted through spores of the bacteria. Hence, anthrax in sheep is caused by bacteria.

Multiple choice animal diseases economic importance of bacteria and fungi bacteria keeping diseases away biology

An animal disease that can be tranferred to humans from the diseased animal is______.

  1. Rinderpest

  2. Anthrax

  3. Mastitis

  4. Foot and mouth disease
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Rinderpest is a cattle plague disease that affects only animals.

Mastitis is the inflammation of breast tissue that affects female breasts.
Foot and mouth disease is a contagious viral infection common in young children characterized by a sore mouth. Anthrax is caused by the bacteria bacillus anthracis and it is spread by contact with the bacterium's spores, which appear in infected animals.

Multiple choice bio-chemistry immunology fungal diseases fungal, protozoan and worm diseases useful and harmful microbes

One of the common fungal disease of man is

  1. Cholera

  2. Plague

  3. Typhoid

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

  • Ringworm is actually a skin infection caused by fungus. No worms involved. The name “ringworm” probably comes from the rash that many people see. On the skin, the rash often has a ring-shaped pattern and a raised, scaly border that snakes its way around the edge like a worm. Ringworm is common.
  • Cholera is an infectious disease that causes severe watery diarrhoea, which can lead to dehydration and even death if untreated. It is caused by eating food or drinking water contaminated with a bacterium called Vibrio cholerae.
  • Typhoid fever, also known simply as typhoid, is a bacterial infection due to a specific type of Salmonella that causes symptoms.
  • Plague is a disease that affects humans and other mammals. It is caused by the bacterium, Yersinia pestis. Humans usually get plague after being bitten by a rodent flea that is carrying the plague bacterium or by handling an animal infected with the plague.

So, the correct answer is 'Ringworm'.

Multiple choice bio-chemistry immunology fungal diseases fungal, protozoan and worm diseases useful and harmful microbes

Athlete's foot disease in humans is caused by :

  1. Bacterium

  2. Virus

  3. Fungus

  4. Worm
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Athlete's foot (tinea pedis) is a fungal infection that usually begins between the toes. Athlete's foot is caused by a number of different fungi, including species of Trichophyton, Epidermophyton, and Microsporum. The condition is typically acquired by coming into contact with infected skin, or fungus in the environment.

So, the correct answer is 'Fungus'.
Multiple choice zoology allergy immunity related disorders and problems antibody production and vaccination biotechnology

Which one of the following, diseases is due to an allergic reaction?

  1. Enteric fever

  2. Hay fever

  3. Skin cancer

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

Hay fever or allergic rhinitis is the allergic response caused by the hypersensitivity of dust, mites, animal fur or hairs. It is characterized by the running nose, sneezing and watery, itchy eyes. Whereas enteric fever is caused by the bacteria, Skin cancer is caused by harmful radiation i.e., UV rays and Goiter is the metabolic disorder. Thus, the correct answer is option B.

Multiple choice zoology allergy immunity related disorders and problems antibody production and vaccination biotechnology

A disease due to allergic reaction is 

  1. Goitre

  2. Hay fever

  3. Enteric fever

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

Allergic rhinitis, also known as hay fever is a type of inflammation in the nose which occurs when the immune system hypersensitizes to allergens in the air. Symptoms include a runny or stuffy nose, sneezing, red, itchy, and watery eyes, and swelling around the eyes. Allergic rhinitis is typically triggered by environmental allergens such as pollen, pet hair, dust.

So, the correct answer is 'Hay fever'.

Multiple choice zoology allergy immunity related disorders and problems antibody production and vaccination biotechnology

Which of the following is caused by allergy?

  1. Leprosy

  2. Typhpid

  3. Asthma

  4. Tetanus
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
  • Asthma is a common long-term inflammatory disease of the airways of the lungs.
  • Symptoms include reversible airflow obstruction and easily triggered bronchospasms. 
  • Symptoms include episodes of wheezing, coughing, chest tightness, and shortness of breath. 
  • Asthma can be caused by Environmental factors including allergens, air pollution, and other environmental chemicals.
  •  Hence, Asthma is caused by an allergy.
  • So, the correct answer is 'Asthma'.
Multiple choice zoology allergy immunity related disorders and problems antibody production and vaccination biotechnology

Hay fever is caused by

  1. Hepatitis

  2. Dengue

  3. Allergy

  4. Helper T-cells
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Hay fever (allergic rhinitis) is caused by grass pollen mostly but it can also be caused by tree pollen or weed pollen. Pollen is a fine powder enriched in protein released by plants as part of their reproductive cycle which can cause irritation in nose, eyes and throat. Symptoms of hay fever include sneezing, runny nose, itchy eyes etc. It is more common in spring and early fall. Hepatitis and dengue are viral diseases. Helper T-cells are immunity providing cells in the body

So, the correct answer is 'Allergy'