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

Which disease is a major concern in the poultry industry, causing significant economic losses?

  1. Avian influenza

  2. Newcastle disease

  3. Marek's disease

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

Avian influenza is a highly contagious viral disease that can cause significant economic losses in the poultry industry due to its potential to spread rapidly and cause high mortality rates.

Multiple choice

The term 'endemic' in the context of diseases refers to:

  1. Diseases that are constantly present in a particular region

  2. Diseases that are rapidly spreading and causing outbreaks

  3. Diseases that are easily transmitted from person to person

  4. Diseases that are fatal and have a high mortality rate
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Endemic diseases are those that are consistently present in a specific geographic area, often due to factors like climate, local ecology, or cultural practices.

Multiple choice

Which of the following diseases is NOT primarily transmitted through water?

  1. Cholera

  2. Typhoid Fever

  3. Malaria

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

Malaria is primarily transmitted through the bites of infected mosquitoes, while cholera, typhoid fever, and dysentery are waterborne diseases.

Multiple choice

The term 'zoonosis' refers to:

  1. Diseases that are transmitted from animals to humans

  2. Diseases that are transmitted from humans to animals

  3. Diseases that are caused by bacteria

  4. Diseases that are caused by viruses
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Zoonoses are diseases that can be transmitted from animals to humans, often through direct contact or consumption of contaminated animal products.

Multiple choice

Which of the following is an example of a disease that has been significantly influenced by human migration patterns?

  1. Smallpox

  2. Yellow Fever

  3. Bubonic Plague

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

Measles has been significantly influenced by human migration patterns, as it is highly contagious and can spread rapidly through unvaccinated populations.

Multiple choice

The concept of 'disease reservoirs' refers to:

  1. Geographic areas where diseases are persistently present

  2. Animal populations that carry and transmit diseases to humans

  3. Environmental factors that contribute to the spread of diseases

  4. Populations with high levels of immunity to a particular disease
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Disease reservoirs are geographic areas where diseases are continuously present, often due to environmental factors or the presence of animal hosts.

Multiple choice

Which of the following diseases is primarily transmitted through airborne droplets?

  1. Ebola

  2. Hepatitis B

  3. Influenza

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

Influenza is primarily transmitted through airborne droplets produced by coughing, sneezing, or talking.

Multiple choice

The term 'pandemic' refers to:

  1. A disease outbreak that affects a large geographic area

  2. A disease outbreak that is rapidly spreading and causing high mortality

  3. A disease outbreak that is caused by a new and highly virulent pathogen

  4. A disease outbreak that is resistant to existing treatments and vaccines
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A pandemic is a disease outbreak that spreads across a large geographic area, typically affecting multiple countries or continents.

Multiple choice

Which of the following diseases is primarily transmitted through contact with contaminated soil?

  1. Tetanus

  2. Hepatitis A

  3. Malaria

  4. Dengue Fever
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Tetanus is primarily transmitted through contact with contaminated soil or objects, as the bacteria that causes it lives in soil and dust.

Multiple choice

What is the most common type of foodborne illness?

  1. Salmonella

  2. E. coli

  3. Listeria

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

Salmonella is the most common type of foodborne illness, accounting for over 1 million cases in the United States each year.

Multiple choice

What is the term for inflammation of the nasal passages?

  1. Rhinitis

  2. Sinusitis

  3. Pharyngitis

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

Rhinitis refers to inflammation of the nasal passages, often causing symptoms like a runny nose, sneezing, and nasal congestion.

Multiple choice

Which type of Rhinitis is caused by an allergic reaction?

  1. Infectious Rhinitis

  2. Vasomotor Rhinitis

  3. Allergic Rhinitis

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

Allergic Rhinitis is triggered by an allergic reaction to substances like pollen, dust, or pet dander, causing symptoms like sneezing, runny nose, and nasal congestion.

Multiple choice

What is the term for Rhinitis caused by a viral or bacterial infection?

  1. Allergic Rhinitis

  2. Vasomotor Rhinitis

  3. Infectious Rhinitis

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

Infectious Rhinitis is caused by a viral or bacterial infection, leading to symptoms like a runny nose, nasal congestion, and sore throat.

Multiple choice

Which type of Rhinitis is characterized by a dry and crusty nasal lining?

  1. Infectious Rhinitis

  2. Vasomotor Rhinitis

  3. Allergic Rhinitis

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

Atrophic Rhinitis is characterized by a dry and crusty nasal lining, often accompanied by a foul odor and difficulty breathing through the nose.

Multiple choice

Which type of Rhinitis is characterized by recurrent episodes of nasal congestion and discharge?

  1. Infectious Rhinitis

  2. Vasomotor Rhinitis

  3. Allergic Rhinitis

  4. Recurrent Acute Rhinitis
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Recurrent Acute Rhinitis is characterized by recurrent episodes of nasal congestion and discharge, often lasting less than 10 days each time.