Biology ยท 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

What is the primary cause of Newcastle Disease in poultry?

  1. Bacteria

  2. Virus

  3. Fungus

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

Newcastle Disease is caused by a virus known as Avian Paramyxovirus-1 (APMV-1), which is highly contagious and can cause severe respiratory and neurological symptoms in poultry.

Multiple choice

Which of these is a bacterial disease that affects pigs and causes pneumonia and meningitis?

  1. African Swine Fever

  2. Porcine Reproductive and Respiratory Syndrome

  3. Swine Dysentery

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

Streptococcus suis is a bacterial infection that can cause pneumonia, meningitis, and other systemic diseases in pigs, leading to significant economic losses in the swine industry.

Multiple choice

What is the primary mode of transmission for Bovine Tuberculosis?

  1. Airborne

  2. Contact

  3. Ingestion

  4. Vector-borne
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Bovine Tuberculosis is primarily transmitted through the inhalation of aerosolized droplets containing Mycobacterium bovis, making it an airborne disease.

Multiple choice

What is the causative agent of Canine Distemper?

  1. Canine Parvovirus

  2. Canine Adenovirus

  3. Canine Distemper Virus

  4. Canine Coronavirus
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Canine Distemper is caused by the Canine Distemper Virus, a highly contagious virus that affects dogs and can cause a wide range of symptoms, including respiratory, gastrointestinal, and neurological problems.

Multiple choice

Which of the following is a bacterial disease that causes Johne's Disease in cattle?

  1. Mycobacterium avium subsp. paratuberculosis

  2. Salmonella

  3. Escherichia coli

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

Johne's Disease is caused by Mycobacterium avium subsp. paratuberculosis, a bacterium that affects cattle and other ruminants, leading to chronic inflammation and thickening of the intestinal wall.

Multiple choice

What is the primary mode of transmission for Avian Influenza?

  1. Contact

  2. Ingestion

  3. Airborne

  4. Vector-borne
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Avian Influenza is primarily transmitted through the inhalation of aerosolized droplets containing the virus, making it an airborne disease.

Multiple choice

Which of the following is a bacterial disease that causes Salmonellosis in poultry?

  1. Escherichia coli

  2. Salmonella

  3. Campylobacter

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

Salmonellosis in poultry is caused by Salmonella bacteria, which can lead to a range of symptoms, including diarrhea, lethargy, and decreased egg production.

Multiple choice

What is the most common type of mastitis in sheep and goats?

  1. Streptococcal Mastitis

  2. Staphylococcal Mastitis

  3. Coliform Mastitis

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

Staphylococcal Mastitis is the most prevalent type of mastitis in sheep and goats, caused by Staphylococcus aureus bacteria, leading to inflammation and reduced milk production.

Multiple choice

What is the most common cause of pyelonephritis?

  1. Escherichia coli

  2. Klebsiella pneumoniae

  3. Proteus mirabilis

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

Escherichia coli is the most common cause of pyelonephritis, accounting for about 80% of cases.

Multiple choice

Which of the following is NOT a common health issue faced by slum dwellers in India?

  1. Malnutrition

  2. Respiratory infections

  3. Water-borne diseases

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

Chronic diseases are less commonly associated with slum living conditions compared to acute health issues such as malnutrition, respiratory infections, and water-borne diseases.

Multiple choice

Which of the following is a major factor contributing to the spread of infectious diseases in urban areas?

  1. Overcrowding

  2. Poor sanitation

  3. Lack of access to healthcare

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

Overcrowding, poor sanitation, and lack of access to healthcare are all major factors contributing to the spread of infectious diseases in urban areas.

Multiple choice

Which of the following is a major factor contributing to the spread of infectious diseases in urban areas?

  1. Overcrowding

  2. Poor sanitation

  3. Lack of access to healthcare

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

Overcrowding, poor sanitation, and lack of access to healthcare are all major factors contributing to the spread of infectious diseases in urban areas.

Multiple choice

Which of the following is NOT a common type of foodborne illness?

  1. Salmonella

  2. E. coli

  3. Vitamin C deficiency

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

Vitamin C deficiency is not a foodborne illness. It is a nutritional deficiency caused by a lack of vitamin C in the diet.

Multiple choice

Which of the following is a common foodborne illness caused by a virus?

  1. Salmonella

  2. E. coli

  3. Norovirus

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

Norovirus is a common foodborne illness caused by a virus. It is highly contagious and can cause symptoms such as vomiting, diarrhea, and stomach pain.

Multiple choice

What is the most common cause of sinusitis?

  1. Bacteria

  2. Viruses

  3. Fungi

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

Viruses are the most common cause of sinusitis.