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

A fungal disease of humans is due to :

  1. Typhoid

  2. Trichophyton

  3. Microsporum

  4. Both B and C

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
  • Typhoid is an enteric fever caused by the bacterium salmonella thyphi. Hence typhoid is not a fungal disease.
  • Trichophyton is a genus of fungi, which includes the parasitic varieties that cause diseases such as tinea, including athlete's foot, ringworm, jock itch, and similar infections of the nail, beard, skin, and scalp.
  • Microsporum is a genus of fungi that causes tinea capitis, tinea corporis, ringworm diseases.
  • Hence Trichophyton and Microsporum cause fungal disease in Humans.
  • So, the correct answer is 'Both B and C'.
Multiple choice bio-chemistry immunology fungal diseases fungal, protozoan and worm diseases useful and harmful microbes

The pathogen Microsporum responsible for ringworm diease in humans belongs to the same kingdom of organisms as that of :

  1. Taenia - a tapeworm

  2. Wuchereria - a filarial worm

  3. Rhizopus - a mould

  4. Ascaris - a roundworm

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
  • The pathogen Microsporum responsible for ringworm disease in humans belongs to the same kingdom of organisms as that of Rhizopus - a mold(a fungus that grows in the form of multicellular filaments called hyphae)because both Microsporum and Rhizophus belong to kingdom Fungi.
  • So, the correct answer is 'Rhizopus - a mould'.
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 bio-chemistry immunology fungal diseases fungal, protozoan and worm diseases useful and harmful microbes

Ringworm in humans caused by

  1. Fungi

  2. Nematodes

  3. Viruses

  4. Bacteria

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
  • Ringworm or Dermatophytosis is a fungal infection caused by Dermatophytosis (Trichophyton and Microsporum fungi).
  •  The causative agent feeds on Keratin. 
  • Symptoms and Stages of a Ringworm Infection Itchy skin.,Red, scaly, or cracked skin.,A ring-shaped rash (from which ringworm gets its name), Hair loss in the affected area (if the hair was present).Hence Ringworm in humans caused by Fungi.
  • So, the correct answer is 'Fungi'.
Multiple choice bio-chemistry immunology fungal diseases fungal, protozoan and worm diseases useful and harmful microbes

Athlete's foot is also called 

  1. Tinea pedis

  2. Tinea capitis

  3. Rickettsia

  4. Candida albicans

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
  • Athlete's foot is a fungal infection that affects the upper layer of the skin of the foot, especially when it is warm, moist and irritated.
  • It is caused by the fungus 'Trichophyton'.
  • Trichophyton rubrum is the most common fungus that causes Athlete's foot.
  • Symptoms include Itching and burning, dry skin, scaling, Inflammation, Blisters lead to cracking of the skin.
  • Athlete's foot is also called as Tinea pedis, Tinea pedum, Ringworm of the foot.
  • So, the correct answer is 'Tinea pedis'.
Multiple choice bio-chemistry immunology fungal diseases fungal, protozoan and worm diseases useful and harmful microbes

Ringworms are caused by 


(I)    Wuchereria 

(II)  Microsporum 
(III) Haemophilus
(IV) Epidermophyton

  1. I and II

  2. II and III

  3. III and IV

  4. I and IV

  5. II and IV

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

Ringworm is a contagious fungal infection caused by mould-like parasites that live on the cells in the outer layer of your skin. It can be spread from Human to human. Ringworm often spreads by direct, skin to skin contact with an infected person. It is caused by Haemophilus and Epidermophyton. Hence, Ringworms are caused by Haemophilus and Epidermophyton.] So, the correct answer is 'III and IV'.

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

Which of the following diseases is caused by a fungal infection?

  1. Ringworm

  2. Cancer

  3. Filaria

  4. Typhoid

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

  • Ringworm is an infection of the skin caused by a fungal infection. Ring worm is characterised by the ring shaped rashes on the skin, itching, yellowing or decolouration of the affected area. It may also result in hair loss, if it infects the areas covered by hair. It is spread through skin contact with infected person.
  • Filaria is caused by a roundworm Wuchereria bancrofti while Typhoid fever is due to bacterial infection caused by Salmonella Typhi
So, the correct option is 'Ringworm'.

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'.