Class 9 Biology Notes for Punjab Board (2026-2027 Session)

Class 9 Biology notes on this page are built around the Punjab Curriculum and Textbook Board (PCTB) syllabus for the 2026-2027 session, covering all eleven chapters from The Science of Biology to Biostatistics. These notes are meant for SSC Part 1 students, whether studying at school or preparing independently for Punjab Board exams.

Each chapter is broken down so students can revise concept by concept instead of working through the entire textbook at once. Solved exercises, short questions, and MCQs accompany the notes, giving students a way to check their understanding of biological concepts such as cell structure, biomolecules, enzymes, and plant physiology. This structure supports both first-time learning and quick revision before tests.

Since these notes are SLO-based and follow the current PCTB syllabus, they align closely with what Punjab Board question papers typically test - from diagram labeling in The Cell to process explanations in Bioenergetics. Students can read the notes online at any time or download the chapter-wise PDFs for offline study, and the same applies to the full English-medium textbook available on this page, alongside Urdu-medium notes for students who prefer studying in Urdu.

For board exam preparation, using these notes alongside past papers and the official textbook gives a fuller picture of both concept understanding and expected question patterns across Lahore, Rawalpindi, Gujranwala, Faisalabad, Multan, Bahawalpur, Sahiwal, Sargodha, and D.G. Khan Boards, all of which follow the same PCTB curriculum.

Chapter List

1. The Science of Biology
2. Biodiversity
3. The Cell
4. Cell Cycle
5. Tissues, Organs, And Organ Systems
6. Biomolecules
7. Enzymes
8. Bioenergetics
9. Plant Physiology
10. Reproduction in Plants
11. Biostatistics