Class 12 Biology notes and question bank — NEB Exam
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Class 12 - 28 Chapters

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Class 12 Biology Notes (Chapter-Wise)

Class 12 Biology notes, important questions and syllabus for NEB exam preparation. Browse chapter-wise notes, the official syllabus and past question papers for Biology, all aligned with the NEB curriculum for Class 12 students.

Plant Anatomy

1 Chapters

Unit 1: Plant Anatomy (Plant Anatomy)

Plant Physiology

5 Chapters

Unit 1: Water Relation (Plant Physiology)

Unit 2: Photosynthesis (Plant Physiology)

Unit 3: Plant Respiration (Plant Physiology)

Unit 4: Plant Hormones (Plant Physiology)

Unit 5: Plant Growth and Movement (Plant Physiology)

Genetics

4 Chapters

Unit 1: Genetic Materials (Genetics)

Unit 2: Mendelian Genetics (Genetics)

Unit 3: Linkage and Crossing Over (Genetics)

Unit 4: Mutation and Polyploidy (Genetics)

Embryology

2 Chapters

Unit 1: Asexual Reproduction (Embryology)

Unit 2: Sexual Reproduction (Embryology)

Biotechnology

1 Chapters

Unit 1: Biotechnology (Biotechnology)

Animal Tissues

1 Chapters

Unit 1: Animal Tissue (Animal Tissues)

Development Biology

2 Chapters

Unit 1: Gametogenesis (Development Biology)

Unit 2: Development of Frog (Development Biology)

Human Biology

8 Chapters

Unit 1: Respiratory System (Human Biology)

Unit 2: Digestive System (Human Biology)

Unit 3: Circulatory System (Human Biology)

Unit 4: Excretory System (Human Biology)

Unit 5: Nervous System (Human Biology)

Unit 6: Sense Organs (Human Biology)

Unit 7: Endocrinology (Human Biology)

Unit 8: Reproductive System (Human Biology)

Human Population and Health Disorders

2 Chapters

Unit 1: Human Population (Human Population and Health Disorders)

Unit 2: Health Disorders (Human Population and Health Disorders)

Applied Biology

2 Chapters

Unit 1: Application of Zoology (Applied Biology)

Unit 2: Microbial Diseases and Application of Microbiology (Applied Biology)

About Class 12 Biology

This page brings together everything you need for Class 12 Biology under the NEB curriculum — chapter-wise notes, PDF notes where available, important questions with model answers, the official syllabus and past board questions, all organised the way the syllabus is taught. Open any chapter above to read its notes online or grab the PDF, then work through the important questions for that topic.

Whether you are revising for the Class 12 Biology board exam, catching up on a chapter you missed, or looking for model questions and old NEB papers to practise with, start with the chapter notes above and use the question bank to test yourself. New notes, PDFs and questions are added regularly as the Biology syllabus is covered.