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NCERT Solutions › Biology › Chapter 8

Chapter 8: Human Health & Disease

NCERT Solutions for CBSE Class 10 Biology — 32 solved questions with detailed explanations.

32
Questions
0
Topics

Solved Questions

Q1. The causative organism of malaria is:

Difficulty: Easy · Topic: Infectious Diseases

Solution

Malaria is caused by Plasmodium (P. vivax, P. falciparum, etc.), transmitted by female Anopheles mosquitoes.

Q2. AIDS is caused by:

Difficulty: Easy · Topic: AIDS

Solution

AIDS is caused by Human Immunodeficiency Virus (HIV), a retrovirus that attacks CD4+ T-helper cells.

Q3. The cells that produce antibodies are:

Difficulty: Easy · Topic: Immunity

Solution

B-lymphocytes differentiate into plasma cells that secrete antibodies (immunoglobulins) for humoral immunity.

Q4. Pneumonia is caused by:

Difficulty: Easy · Topic: Human Health & Disease

Solution

Streptococcus pneumoniae.

Q5. Cancer cells show:

Difficulty: Easy · Topic: Human Health & Disease

Solution

uncontrolled cell division.

Q6. Active immunity is:

Difficulty: Easy · Topic: Human Health & Disease

Solution

long-lasting, involves memory cells.

Q7. Passive immunity is:

Difficulty: Easy · Topic: Human Health & Disease

Solution

short-lived, involves ready-made antibodies.

Q8. Widal test diagnoses:

Difficulty: Easy · Topic: Human Health & Disease

Solution

typhoid.

Q9. Mantoux test diagnoses:

Difficulty: Easy · Topic: Human Health & Disease

Solution

tuberculosis.

Q10. Autoimmune disease example is:

Difficulty: Easy · Topic: Human Health & Disease

Solution

rheumatoid arthritis.

Q11. Allergens trigger:

Difficulty: Easy · Topic: Human Health & Disease

Solution

IgE-mediated immune response.

Q12. Widal test is for:

Difficulty: Easy · Topic: Human Health & Disease

Solution

typhoid.

Q13. Mantoux test is for:

Difficulty: Easy · Topic: Human Health & Disease

Solution

tuberculosis.

Q14. ELISA test detects:

Difficulty: Easy · Topic: Human Health & Disease

Solution

HIV antibodies.

Q15. Metastasis is:

Difficulty: Easy · Topic: Human Health & Disease

Solution

spread of cancer cells.

Q16. Oncogenes promote:

Difficulty: Easy · Topic: Human Health & Disease

Solution

cancer cell growth.

Q17. Malaria is caused by:

Difficulty: Easy · Topic: Diseases

Solution

Malaria causative agent: Plasmodium (protozoan).

Q18. Cholera is caused by:

Difficulty: Easy · Topic: Diseases

Solution

Cholera causative agent: Vibrio cholerae (bacterium).

Q19. TB (Tuberculosis) is caused by:

Difficulty: Easy · Topic: Diseases

Solution

TB (Tuberculosis) causative agent: Mycobacterium tuberculosis.

Q20. Dengue is caused by:

Difficulty: Easy · Topic: Diseases

Solution

Dengue causative agent: Dengue virus.

Q21. Chickenpox is caused by:

Difficulty: Easy · Topic: Diseases

Solution

Chickenpox causative agent: Varicella-Zoster virus.

Q22. Common cold is caused by:

Difficulty: Easy · Topic: Diseases

Solution

Common cold causative agent: Rhinovirus.

Q23. Ringworm is caused by:

Difficulty: Easy · Topic: Diseases

Solution

Ringworm causative agent: Fungi (Microsporum, Trichophyton).

Q24. Amoebiasis is caused by:

Difficulty: Easy · Topic: Diseases

Solution

Amoebiasis causative agent: Entamoeba histolytica.

Q25. Filariasis is caused by:

Difficulty: Easy · Topic: Diseases

Solution

Filariasis causative agent: Wuchereria bancrofti (nematode).

Q26. Ascariasis is caused by:

Difficulty: Easy · Topic: Diseases

Solution

Ascariasis causative agent: Ascaris lumbricoides.

Q27. Plague is caused by:

Difficulty: Easy · Topic: Diseases

Solution

Plague causative agent: Yersinia pestis.

Q28. Diphtheria is caused by:

Difficulty: Easy · Topic: Diseases

Solution

Diphtheria causative agent: Corynebacterium diphtheriae.

Q29. Typhoid is caused by:

Difficulty: Easy-Medium · Topic: Human Health & Disease

Solution

Salmonella typhi.

Q30. Dengue is transmitted by:

Difficulty: Easy-Medium · Topic: Human Health & Disease

Solution

Aedes mosquito.

Q31. Interferons are:

Difficulty: Easy-Medium · Topic: Human Health & Disease

Solution

antiviral proteins.

Q32. Vaccination provides:

Difficulty: Easy-Medium · Topic: Human Health & Disease

Solution

active artificial immunity.

Other Chapters in Biology

Ch 1: Reproduction in OrganismsCh 2: Sexual Reproduction in PlantsCh 3: Human ReproductionCh 4: Reproductive HealthCh 5: Principles of InheritanceCh 6: Molecular Basis of InheritanceCh 7: EvolutionCh 9: Strategies for EnhancementCh 10: Microbes in Human WelfareCh 11: Biotechnology PrinciplesCh 12: Biotechnology ApplicationsCh 13: Organisms & PopulationsCh 14: EcosystemCh 15: Biodiversity & ConservationCh 16: Environmental Issues

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