Below are the most expected long-answer questions from Zoology for the CHSE Board Examination 2026, selected for focused preparation.
📘 Important Long Answer Questions
🔹 Reproduction & Development
- Give an account of the female reproductive system.
- Describe the process of oogenesis.
- Describe the process of fertilization in humans.
🔹 Genetics & Sex Determination
- What is sex determination? Discuss sex determination in birds, humans, and honey bee.
- Explain the chromosomal basis of sex determination in humans.
🔹 Biotechnology & Evolution
- Describe briefly recombinant DNA technology.
- Give evidences of organic evolution.
🔹 Ecology & Biodiversity
- 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.
🔹 Human Reproduction & Health
- Write a short note on function of placenta.
- Write a short note on fertilization.
- Write a short note on epididymis.
- Write a short note on vasectomy.
- Write a short note on tubectomy.
- Write a short note on ectopic pregnancy.
- Write a short note on MTP (Medical Termination of Pregnancy).
- Write a short note on adolescence.
🔹 Genetic Disorders & Syndromes
- Write a short note on phenylketonuria.
- Write a short note on Down’s syndrome.
- Write a short note on Turner’s syndrome.
- Write a short note on Klinefelter’s syndrome.
- Write a short note on amniocentesis.
🔹 Evolution & Population Genetics
- Write a short note on Hardy–Weinberg principle.
- Write a short note on adaptive radiation.
- Write a short note on genetic drift.
🔹 Immunology & Diseases
- Write a short note on autoimmunity.
- Write a short note on AIDS.
- Write a short note on carcinogenesis.
- Write a short note on vaccination.
- Write a short note on interferons.
🔹 Biodiversity & Conservation
- Write a short note on biodiversity hotspots.
- Write a short note on biosphere reserves.
🔹 Social & Reproductive Health
- Write a short note on alcohol abuse.
- 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.
🔹 Biodiversity & Evolution
- Differentiate between in-situ conservation and ex-situ conservation.
- Differentiate between genetic diversity and species diversity.
- Differentiate between homologous organs and analogous organs.
- Differentiate between divergent evolution and convergent evolution.
🔹 Human Reproduction
- Differentiate between spermatogenesis and oogenesis.
- Differentiate between Sertoli cells and Leydig cells.
- Differentiate between corpus luteum and corpus albicans.
- Differentiate between vasectomy and tubectomy.
🔹 Genetics & Chromosomes
- Differentiate between autosome and allosome.
- Differentiate between Down’s syndrome and Turner’s syndrome.
🔹 Immunology
- Differentiate between active immunity and passive immunity.
- Differentiate between innate immunity and acquired immunity.
- Differentiate between B-lymphocytes and T-lymphocytes.
- Differentiate between interferons and antibodies.
🔹 Biotechnology
- Differentiate between DNA polymerase and DNA ligase.
- Differentiate between ZIFT and GIFT.
🔹 Human Health & Diseases
- Differentiate between amoebiasis and filariasis.
- Differentiate between benign tumours and malignant tumours.
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