Biology · Science General

Disease Causative Agents

2,258 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

The following microbe is used as a biological weapon recently

  1. Phytophthora infestans

  2. Bacillus anthracis

  3. Hibiscus virus

  4. all of these

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Bacillus anthracis is the bacteria that causes anthrax. In 1991 Gulf War it is used by Iraq. They purchased anthrax spores from the US.
So, the correct option is 'Bacillus anthracis'
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

Which of the following microorganisms causes ringworm?

  1. Bacteria

  2. Protozoa

  3. Fungi

  4. Virus

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Ringworm is a skin infection which is characterized by the formation of a ring-like a pattern in the rash. It is caused by the fungal species name Tenia. The ringworm infection can occur in different parts of the body like feet, armpits, scalp, thighs, groin, etc.

Thus, the correct answer is option C. 

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

Which of these pathogens causes ringworm and athlete's foot?

  1. Protozoa

  2. Bacteria

  3. Fungi

  4. Algae

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Athlete's foot and ringworm are caused by fungus. They are collectively known as tinea. Ringworm is caused by a worm known as ringworm. It is characterised by ring-like red patches on the skin.

Athelete foot is mainly caused in between the fingers of the toes due to excessive sweating or moisture.
So, the correct answer is option C.

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

Which of the following is a fungal disease in human?

  1. Athletes food disease

  2. Foot and mouth disease

  3. Leukoderma

  4. Proriasis

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Athlete's foot is a common fungal infection of the skin, especially between the toes. Foot and mouth disease is a viral disease affecting animals. Leukoderma (vitiligo) is a pigmentation disorder, and psoriasis is an autoimmune skin condition - neither is fungal.

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

Causative agent of Athlete's foot disease is _________.

  1. Tinea

  2. Ascaris

  3. Aspergillus

  4. Candida

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
  • Tinea is the name of a group of diseases caused by a fungus.
  • Types of tinea include ringworm, athlete's foot and jock itch. 
  • You can get them by touching an infected person, from damp surfaces such as shower floors, or even from a pet. 
  • Hence, the Causative agent of Athlete's foot disease is Tinea.
  • So, the correct answer is 'Tinea'.
Multiple choice bio-chemistry immunology fungal diseases fungal, protozoan and worm diseases useful and harmful microbes

Ringworm in humans is caused by

  1. Viruses

  2. Bacteria

  3. Fungi

  4. Nematodes

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Ringworm is a common fungal infection of the skin and is not due to the worm. The condition is named for the site of the body where the infection occurs. It causes a scaly, crusted rash that may appear round, red patches on the skin.
So, the correct answer is 'Fungi'

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

Name the disease which is caused by fungus.

  1. Cancer

  2. Parkinsons

  3. Typhoid

  4. Ergot

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
  • Ergot is a fungal disease of cereal grasses, especially rye, caused by species of the ascomycete fungus Claviceps.
  • Typhoid fever is caused by Salmonella typhi bacteria.
  • Parkinson's disease (PD) is a neurodegenerative disorder that affects the nerve cells in the brain that produce dopamine. It is not caused by bacteria or fungi.
  • Cancer results when cellular changes cause the uncontrolled growth and division of cells, hence it is not caused by any infectious agent.

Hence answer is 'Ergot'