10th class Biology, Chapter 9: Diseases and Immunity MCQs

1. A doctor finds bacteria in a patient's blood sample. What type of disease is the patient suffering from?

1. (A) Infectious disease ✓
2. (B) Non-infectious disease
3. (C) Genetic disorder
4. (D) Nutritional deficiency

2. Which of the following is an example of an infectious disease?

1. (A) Diabetes
2. (B) Hypertension
3. (C) Influenza ✓
4. (D) Osteoporosis

3. A person develops rabies after being bitten by a dog. This is an example of:

1. (A) Non-infectious disease
2. (B) Food-borne illness
3. (C) Zoonotic disease ✓
4. (D) Genetic disorder

4. Which of the following is a vector-borne disease?

1. (A) AIDS
2. (B) Malaria ✓
3. (C) Tuberculosis
4. (D) Diabetes

5. A person develops dengue fever after a mosquito bite. In this case, the mosquito acts as:

1. (A) Host
2. (B) Pathogen
3. (C) Vector ✓
4. (D) Reservoir

6. Which of the following is the first line of defence against pathogens?

1. (A) Antibodies
2. (B) Skin and mucous membranes ✓
3. (C) T cells
4. (D) B cells

7. Skin is categorized as:

1. (A) Non-specific defence ✓
2. (B) Specific defence
3. (C) Acquired immunity
4. (D) Passive Immunity

8. What triggers an allergic reaction?

1. (A) Pathogens
2. (B) Allergens ✓
3. (C) Antigens
4. (D) Antibodies

9. Arrange in the correct order: 1. Thrombin converts fibrinogen 2. Platelets form a temporary plug 3. Clotting factors convert prothrombin 4. Platelets contract to reduce wound size

1. (A) 3 → 2 → 4 → 1
2. (B) 4 → 3 → 2 → 1
3. (C) 2 → 3 → 1 → 4 ✓
4. (D) 1 → 2 → 3 → 4

10. Malaria is caused by:

1. (A) Plasmodium ✓
2. (B) a virus
3. (C) a fungus
4. (D) a tapeworm

11. Which of the following is a bacterial infection?

1. (A) Typhoid ✓
2. (B) Measles
3. (C) Candidiasis
4. (D) Amoebiasis

12. Haemophilia, thalassemia and muscular dystrophy are:

1. (A) zoonotic diseases
2. (B) vector-borne diseases
3. (C) genetic diseases ✓
4. (D) infectious diseases

13. Alzheimer's disease, Parkinson's disease and arthritis result from:

1. (A) viral infections
2. (B) bacterial infections
3. (C) mosquito bites
4. (D) decline of body organs due to aging ✓

14. Anthrax is caused by:

1. (A) Plasmodium
2. (B) Bacillus anthracis ✓
3. (C) influenza A virus
4. (D) Ebola virus

15. Bird flu (avian influenza) is caused by:

1. (A) Candida albicans
2. (B) influenza A virus ✓
3. (C) Bacillus anthracis
4. (D) Borrelia burgdorferi

16. Dengue virus is transmitted through the:

1. (A) housefly
2. (B) Aedes mosquito ✓
3. (C) Anopheles mosquito
4. (D) tick

17. Lyme disease spreads through:

1. (A) ticks ✓
2. (B) Aedes mosquitoes
3. (C) contaminated water
4. (D) airborne droplets

18. The inflammatory chemical released in response to allergens is:

1. (A) interferon
2. (B) thrombin
3. (C) histamine ✓
4. (D) insulin

19. A severe, life-threatening allergic reaction with sudden drop in blood pressure is:

1. (A) contact dermatitis
2. (B) anaphylactic shock ✓
3. (C) hay fever
4. (D) eczema

20. Allergic rhinitis is also called:

1. (A) eczema
2. (B) asthma
3. (C) anaphylaxis
4. (D) hay fever ✓