Class 12 Biology Syllabus, Chapters & Solved Examples
Reproduction, genetics/evolution, human welfare, biotechnology and ecology.
Class 12 Biology chapters
Aligned to CBSE Class XII Biology 2026–27 course units.
Reproduction
Sexual reproduction and reproductive biology
Genetics and Evolution
Inheritance, molecular basis and evolution
Biology and Human Welfare
Health, disease and microbes
Biotechnology and its Applications
Principles and applications
Ecology and Environment
Populations, ecosystems and biodiversity
A repeatable learning system
1. Diagnose
Start with a short concept check so the tutor knows exactly what the learner understands and where the gaps are.
2. Explain visually
Build the idea with diagrams, analogies, worked reasoning and real-life context before asking the learner to memorise a rule.
3. Guided practice
Tutor solves one model problem, then the learner solves a similar problem with progressively less help.
4. Retrieval & exam practice
Use short recall checks, mixed questions, board-style applications and error correction rather than passive rereading.
5. Progress loop
Track weak concepts, homework accuracy and test performance, then adjust the next session around evidence.