Download 9th Class Biology Book PDF (PTB) – 2025 Edition
Biology is the study of life, but for 9th Class students, it is the study of definitions and diagrams. The Punjab Textbook Board (PTB) book covers everything from Cell Biology to Nutrition. This updated PDF includes the new "Side Box" information which is now part of the MCQs.
⚠️ Expert Tip: No Diagram = No Marks!
In Biology Long Questions, diagrams carry 30% of the marks. Even if the question doesn't explicitly ask for it, you must draw a labeled diagram for topics like:
1. Human Heart (Ch 9)
2. Fluid Mosaic Model (Ch 4)
3. Villi Structure (Ch 8)
📘 Syllabus Breakdown: 9 Chapters
The syllabus is divided into two halves. The second half (Physiology) is tougher.
📝 Biology Paper Pattern & Marks (60 Marks)
Biology has a theory paper of 60 marks. The remaining 15 marks are for the practical exam (conducted in 10th class).
| Section | Description | Marks |
|---|---|---|
| Q1: MCQs | 12 Multiple Choice Questions | 12 |
| Short Questions | 3 Sections (Definitions + Reasoning) | 30 |
| Long Questions | Attempt 2 out of 3 (Theory + Diagram) | 18 |
| Total | Time Allowed: 2 Hours | 60 |
📥 Download PTB 9th Class Biology Book PDF
Click the button below to download the official English Medium book. The file is high-quality, so you can zoom in on complex diagrams easily.
💡 How to Tackle Bioenergetics (Ch 7)?
Chapter 7 is the most difficult chapter due to the "Mechanism of Photosynthesis" (Light & Dark Reactions).
Strategy: Practice the "Z-Scheme" diagram at least 5 times. It is a favorite Long Question of examiners.
Need Solved Short Questions? Check our Notes Section.
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