Biology · Class 12 · CBSE · Science
Chapter-wise practice questions with worked solutions for Class 12 · CBSE · Science Biology.
Chapters
- 1Sexual Reproduction in Flowering Plants🌼 Flower Structure • 🌾 Microsporogenesis • 🌸 Megasporogenesis • 🌱 Pollination • 🌿 Fertilization • 🌰 Seed Formation100 questions · 6 marks weightage
- 2Human Reproduction🧑 Male Reproductive System • 👩 Female Reproductive System • 🥚 Gametogenesis • 🤰 Fertilization • 👶 Pregnancy100 questions · 6 marks weightage
- 3Principles of Inheritance and VariationPrinciples of Inheritance & Variation (🧬 Mendel's Laws • 👨👩👧 Inheritance Patterns • 🧬 Chromosomal Theory • ⚧️ Sex Determination • 🧩 Genetic Disorders • 🌈 Variation)35 questions · 7 marks weightage
- 4Molecular Basis of Inheritance35 questions
- 5Microbes in Human WelfareMicrobes in Human Welfare (🧫 Useful Microbes • 🥣 Food Production • 💊 Antibiotics • 🧪 Industrial Products • 🌱 Sewage Treatment • ⛽ Biogas • 🌾 Biofertilizers • 🐞 Biocontrol)35 questions · 6 marks weightage
- 6Evolution🌍 Origin of Life • 🦴 Fossil Evidence • 🌿 Evolutionary Theory • ⚖️ Natural Selection • 🧬 Hardy-Weinberg Principle • 🦍 Human Evolution50 questions
- 7Human Health and Disease80 questions
- 8Reproductive Health🩺 Reproductive Health • 👨👩👧 Family Planning • 💊 Contraception • 🧫 STDs • 🧬 Infertility100 questions · 6 marks weightage
- 9Biotechnology: Principles and Processes35 questions · 5 marks weightage
- 10Biotechnology and its Applications35 questions · 5 marks weightage
- 11Organisms and Populations35 questions · 5 marks weightage
- 12Ecosystem35 questions · 5 marks weightage
- 13Biodiversity and Conservation35 questions · 5 marks weightage
Sample papers
Previous-year papers
Master Biology one chapter at a time
Sign up free to practise every chapter adaptively, attempt timed sample papers and see exactly which topics need work.
Start practising freeFree to start · No credit card needed