Karnataka 2nd PUC Biology Chapter 7 Important Questions 2027
Neha Tanna8 Oct, 2026
Karnataka 2nd PUC Biology Chapter 7, Human Health and Diseases, covers important concepts related to infectious diseases, immunity, AIDS, cancer, and drug and alcohol abuse. Students preparing for the 2027 examination should revise the concepts thoroughly and practise important questions to strengthen their preparation.
The Karnataka Government's Department of School Education (Pre-University) has provided chapter-wise multiple-choice questions for Biology as part of its 2026–27 competitive examination material.
Karnataka 2nd PUC Biology Chapter 7 Questions and Answers
Students can practise the following 15 important MCQs based on the Chapter 7 material.
1. Which test is performed to confirm typhoid fever?
(a) ELISA test
(b) WIDAL test
(c) Biopsy
(d) Schick test
Answer: (b) WIDAL test
2. I was a cook by profession and spread typhoid through the food I used to cook
(a) Madam Curie
(b) Mary Mallon
(c) Rosalind Franklin
(d) G. J. Mendel
Answer: (b) Mary Mallon
3. Entamoeba histolytica causes ________ in humans.
(a) Histolysis
(b) Amoebiasis
(c) Catharsis
(d) Sporogenesis
Answer: (b) Amoebiasis
4. After the injection of sporozoites into human blood, which organ do they travel to initially?
(a) Lymph nodes
(b) Brain
(c) Lungs
(d) Liver
Answer: (d) Liver
5. Acquired immunity is:
(a) Pathogen specific
(b) Pathogen non-specific
(c) Congenital
(d) Non-effective
Answer: (a) Pathogen specific
6. Which cells actively participate in an allergic reaction?
(a) Mast cells
(b) Monocytes
(c) Lymphocytes
(d) Macrophages
Answer: (a) Mast cells
7. Which of the following is a primary lymphoid organ?
(a) Thymus
(b) Spleen
(c) Tonsils
(d) Lymph nodes
Answer: (a) Thymus
8. Which of the following is a secondary lymphoid organ?
(a) Brunner glands
(b) Peyer's patches
(c) Crypts of Lieberkühn
(d) Glisson's capsule
Answer: (b) Peyer's patches
9. Thymus is responsible for the maturation of which cells?
(a) Tendons
(b) B-cells
(c) T-cells
(d) Mast cells
Answer: (c) T-cells
10. Which organ acts as a filter of the blood by trapping blood-borne microorganisms?
(a) Spleen
(b) Liver
(c) Tonsils
(d) Bone marrow
Answer: (a) Spleen
11. Metastasis is:
(a) Normal equilibrium condition of the body
(b) Morphological changes from larva to adult
(c) Generation of a new tumour at different sites of the body
(d) Abnormal growth of the body muscles
Answer: (c) Generation of a new tumour at different sites of the body
12. The common approaches for the treatment of cancer are:
(a) Surgery
(b) Radiation therapy
(c) Immunotherapy
(d) All of these
Answer: (d) All of these
13. Malignant malaria is caused by which species of Plasmodium?
(a) P. vivax
(b) P. malariae
(c) P. ovale
(d) P. falciparum
Answer: (d) P. falciparum
14. A patient is suspected of suffering from AIDS. Which diagnostic technique would you recommend for its detection?
(a) ELISA
(b) MRT
(c) Ultrasound
(d) WIDAL
Answer: (a) ELISA
15. Tobacco contains an alkaloid known as:
(a) Morphine
(b) Piperine
(c) Nicotine
(d) Analgesine
Answer: (c) Nicotine
Karnataka 2nd PUC Biology Chapter 7 PDF
The Karnataka Government's 2026–27 Biology Chapter 7 contains 100 multiple-choice questions followed by an answer key. It covers the major concepts of Human Health and Diseases and can be used for chapter-wise practice and revision.
Students can use the PDF along with their prescribed study material to practise objective-type questions. Revising the questions more than once can help improve familiarity with important terms, disease-causing organisms, immunity, and other concepts covered in the chapter.
Karnataka 2nd PUC Biology Chapter 7 PDF
How to Prepare for Karnataka 2nd PUC Biology Chapter 7?
Students can prepare effectively by understanding the concepts, making concise notes, revising key topics, and practising MCQs regularly to strengthen their knowledge of Human Health and Diseases.
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Revise infectious diseases: Prepare notes on causative organisms, symptoms, transmission, and diagnostic information for typhoid, pneumonia, amoebiasis, ascariasis, elephantiasis, ringworms, and malaria.
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Understand types of immunity: Focus on innate and acquired immunity, along with active and passive immunity, antibody responses, cell-mediated immunity, allergies, and autoimmune disorders.
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Learn lymphoid organs: Revise the functions and classification of primary and secondary lymphoid organs, including the bone marrow, thymus, spleen, lymph nodes, tonsils, Peyer's patches, and appendix.
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Focus on AIDS and cancer: Study HIV infection, transmission, diagnosis, immune response, cancer, metastasis, and major approaches used for cancer treatment.
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Practise MCQs regularly: Solve chapter-wise questions and check the answer key. Reviewing incorrect answers can help students identify concepts that need additional revision.
Karnataka 2nd PUC Biology Chapter 7 Important Questions 2027 cover key areas of Human Health and Diseases, including infectious diseases, immunity, AIDS, cancer, malaria, and substance abuse.
PW provides Karnataka 2nd PUC exam content, including Karnataka Board Exam Blogs, sample papers, mock tests, guidance sessions, and more. Also, enroll today in Karnataka 2nd PUC Online Coaching to prepare.
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