CHSE Zoology Important Questions 2026 | Sure-Shot Board Exam Questions

Below are the most expected long-answer questions from Zoology for the CHSE Board Examination 2026, selected for focused preparation.

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📘 Important Long Answer Questions

🔹 Reproduction & Development

1. Give an account of the female reproductive system.
2. Describe the process of oogenesis.
3. Describe the process of fertilization in humans.

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🔹 Genetics & Sex Determination

4. What is sex determination? Discuss sex determination in birds, humans, and honey bee.
5. Explain the chromosomal basis of sex determination in humans.

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🔹 Biotechnology & Evolution

6. Describe briefly recombinant DNA technology.
7. Give evidences of organic evolution.

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🔹 Ecology & Biodiversity

8. What is biodiversity? Explain the conservation of biodiversity.

📘 CHSE Zoology 2026 – Important Short Note Questions

The following short-note questions are highly important for 2–3 mark answers in the CHSE Board Examination 2026. Prepare them with definitions, key points, and diagrams wherever required.

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🔹 Human Reproduction & Health

1. Write a short note on function of placenta.
2. Write a short note on fertilization.
3. Write a short note on epididymis.
4. Write a short note on vasectomy.
5. Write a short note on tubectomy.
6. Write a short note on ectopic pregnancy.
7. Write a short note on MTP (Medical Termination of Pregnancy).
8. Write a short note on adolescence.

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🔹 Genetic Disorders & Syndromes

9. Write a short note on phenylketonuria.
10. Write a short note on Down’s syndrome.
11. Write a short note on Turner’s syndrome.
12. Write a short note on Klinefelter’s syndrome.
13. Write a short note on amniocentesis.

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🔹 Evolution & Population Genetics

14. Write a short note on Hardy–Weinberg principle.
15. Write a short note on adaptive radiation.
16. Write a short note on genetic drift.

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🔹 Immunology & Diseases

17. Write a short note on autoimmunity.
18. Write a short note on AIDS.
19. Write a short note on carcinogenesis.
20. Write a short note on vaccination.
21. Write a short note on interferons.

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🔹 Biodiversity & Conservation

22. Write a short note on biodiversity hotspots.
23. Write a short note on biosphere reserves.

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🔹 Social & Reproductive Health

24. Write a short note on alcohol abuse.
25. Write a short note on GIFT (Gamete Intra-Fallopian Transfer).

📘 CHSE Zoology 2026 – Important Differentiate Between Questions

The following difference-type questions are very important for 3–5 mark answers in the CHSE Board Examination.
Students are advised to write answers in tabular form with at least 3–4 points.

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🔹 Biodiversity & Evolution

1. Differentiate between in-situ conservation and ex-situ conservation.
2. Differentiate between genetic diversity and species diversity.
3. Differentiate between homologous organs and analogous organs.
4. Differentiate between divergent evolution and convergent evolution.

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🔹 Human Reproduction

5. Differentiate between spermatogenesis and oogenesis.
6. Differentiate between Sertoli cells and Leydig cells.
7. Differentiate between corpus luteum and corpus albicans.
8. Differentiate between vasectomy and tubectomy.

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🔹 Genetics & Chromosomes

9. Differentiate between autosome and allosome.
10. Differentiate between Down’s syndrome and Turner’s syndrome.

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🔹 Immunology

11. Differentiate between active immunity and passive immunity.
12. Differentiate between innate immunity and acquired immunity.
13. Differentiate between B-lymphocytes and T-lymphocytes.
14. Differentiate between interferons and antibodies.

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🔹 Biotechnology

15. Differentiate between DNA polymerase and DNA ligase.
16. Differentiate between ZIFT and GIFT.

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🔹 Human Health & Diseases

17. Differentiate between amoebiasis and filariasis.
18. Differentiate between benign tumours and malignant tumours.

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