NCERT CLASS 12 · BIOLOGY
Biology revision sheet
This is an original recall guide for year-round study. It does not claim to be a board syllabus or a replacement for the current official NCERT edition.
Organise your revision by topic
Use this as a study map, then confirm the exact chapter names and order in your prescribed book.
- Reproduction
- Genetics and evolution
- Biology in human welfare
- Biotechnology
- Ecology and environment
Focus
Use labelled diagrams and process maps to connect structure, function, regulation, and variation.
Common mistake to avoid
Do not memorise a diagram as a picture; state the function of every label.
Three prompts before you close the book
- Can you label the diagram and give each part’s function?
- What is the sequence of this biological process?
- Which terms are easily confused and how do they differ?
Open Biology important questions for revision →
A short weekly routine
- Open one current chapter in the official NCERT textbook portal ↗.
- Make a one-page recall sheet using definitions, formulae, diagrams, examples, or working notes relevant to that chapter.
- Answer the three prompts above without looking at the book.
- Try the free subject practice ↗, then review only the errors.