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Class 12 Biology Notes, All in One Place

Reproduction, Genetics, Evolution, Human Welfare, Biotechnology, and Ecology — every chapter of Bihar Board Class 12 Biology with clear explanations, labelled diagrams, revision notes, and practice questions. Plus 3 legacy chapters for competitive exams.

13 Current Chapters 3 Legacy Chapters Diagrams Practice Questions
16 Total Chapters
13 Current Syllabus
3 Legacy Chapters
6 Categories
100+ Diagrams
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Reproduction

Chapters 1 – 3
3 Chapters
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Genetics & Evolution

Chapters 4 – 6
3 Chapters
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Biology & Human Welfare

Chapters 7 – 8
2 Chapters
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Biotechnology

Chapters 9 – 10
2 Chapters
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Ecology

Chapters 11 – 13
3 Chapters
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Legacy Chapters

Old NCERT · For Competitive Exams
3 Chapters
⚠️ These chapters were removed from the current NCERT Class 12 Biology syllabus (2022). Still useful for NEET, CUET, and other competitive exams — and for reference.
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Biology, Explained the Way It Should Be

Six reasons students across Bihar trust us for Biology.

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Always Free

No paywall, no subscription, no hidden charges. Every chapter is open to every student.

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Labelled Diagrams

Every concept comes with clear, exam-ready diagrams — from flower structure to DNA replication.

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Exam-Focused

NCERT-based answers, key definitions, and practice questions — exactly what the board exam asks.

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Legacy Chapters

Old NCERT chapters like Reproduction in Organisms and Environmental Issues — for competitive exams.

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Dark Mode

Read late at night without eye strain. Every chapter supports dark mode — and remembers your choice.

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Made in Nalanda, for students of Bihar first — and for anyone who finds it useful.

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