Biology 1st Year book (Class 11) is published by the Punjab Education, Curriculum, Training and Assessment Authority (PECTAA). The latest 2025–26 edition is based on the Updated/Revised National Curriculum of Pakistan 2023. It covers twelve chapters ranging from Biodiversity and Classification to Human Skeletal and Muscular Systems.
For FSC Part 1 students, this book is the core resource for the Punjab Board Biology paper. Each chapter builds a clear understanding of biological concepts through theory, diagrams, and structured exercises. The PDF makes it easy to revise key topics, go over diagrams, and prepare chapter by chapter before the final board exam.
Book Overview
- Class: 11 (FSC Part 1 / First Year)
- Subject: Biology
- Category: FSC
- Board: Punjab Board (PECTAA, Lahore)
- Curriculum: NCP 2023 (Updated/Revised)
- Total Chapters: 12
- Format: PDF
Chapter List
Chapter 1 – Biodiversity and Classification
Introduces the diversity of life on Earth and the systems used to classify living organisms. Covers taxonomic ranks, binomial nomenclature, and major kingdoms.
Chapter 2 – Bacteria and Viruses
Covers the structure, types, reproduction, and importance of bacteria and viruses. Includes their roles in disease, industry, and biotechnology.
Chapter 3 – Cells and Subcellular Organelles
Explains prokaryotic and eukaryotic cell structure. Covers the function of major organelles including the nucleus, mitochondria, chloroplasts, ribosomes, and ER.
Chapter 4 – Molecular Biology
Covers the structure and function of biological macromolecules — DNA, RNA, and proteins. Introduces DNA replication, transcription, and translation.
Chapter 5 – Enzymes
Explains the nature, properties, and mechanism of enzyme action. Covers factors affecting enzyme activity including temperature, pH, and substrate concentration.
Chapter 6 – Bioenergetics
Deals with energy flow in living systems. Covers photosynthesis (light and dark reactions) and cellular respiration (glycolysis, Krebs cycle, oxidative phosphorylation).
Chapter 7 – Structural and Computational Biology
A new chapter in the NCP 2023 curriculum. Introduces the study of biological structures at the molecular level and the use of computational tools in modern biology.
Chapter 8 – Plant Physiology
Covers transport in plants, transpiration, stomatal movement, mineral nutrition, and plant growth regulators.
Chapter 9 – Human Digestive System
Explains the structure and function of the human digestive system. Covers organs, digestive enzymes, absorption of nutrients, and common digestive disorders.
Chapter 10 – Human Respiratory System
Covers the mechanism of breathing, gas exchange in the lungs, transport of oxygen and carbon dioxide in blood, and respiratory disorders.
Chapter 11 – Human Circulatory System
Explains the structure of the heart, blood vessels, and blood. Covers the cardiac cycle, blood pressure, and common cardiovascular disorders.
Chapter 12 – Human Skeletal and Muscular Systems
Covers the structure of bones and joints, types of muscles, and the mechanism of muscle contraction. Includes common skeletal and muscular disorders.
Download Biology Class 11 Book PDF
Two editions are available below. Click the button for the edition you need — each opens in a new tab and is ready to read or save on any device.
2025–26 Edition (NCP 2023 — PECTAA)
⬇ Download PDF (2025–26)E-Learn Punjab Edition
⬇ Download PDF (E-Learn Punjab)Who Should Read This
This book is for FSC Part 1 (First Year) science students preparing for the Punjab Board annual exam. It is also highly relevant for students planning to appear in MDCAT, as Biology from Class 11 forms a major portion of the MDCAT syllabus. Topics like cell biology, molecular biology, enzymes, and human body systems are directly tested in the entry test.
Applicable Boards
This textbook is published by PECTAA and is used in Punjab Board colleges. Students from the Federal Board (FBISE) and AJK Board can also use it as a reference, since the FSC Biology syllabus is largely the same. The chapter content also aligns well with Sindh and KPK board syllabi for first-year Biology.
FAQs
Is this the latest Biology book for FSC Part 1 Punjab Board?
Yes. The 2025–26 edition is the latest, published by PECTAA based on the Updated/Revised National Curriculum of Pakistan 2023.
How many chapters are in Biology Class 11?
There are 12 chapters, from Biodiversity and Classification to Human Skeletal and Muscular Systems.
Is this book useful for MDCAT preparation?
Yes. A large portion of the MDCAT Biology paper is based on FSC Part 1 topics including cell biology, molecular biology, enzymes, bioenergetics, and human organ systems.
What is the difference between the 2025-26 and E-Learn Punjab editions?
Both follow the same NCP 2023 curriculum. The E-Learn Punjab edition is the digital version made available through the Punjab government’s e-learning platform. The 2025–26 edition is the latest printed version approved by PECTAA.
Can Federal Board students use this book?
Yes. The FSC Biology syllabus is very similar across Punjab and Federal boards. Federal Board students can use this book for reference and additional practice.
Is the PDF free to download?
Yes. Both editions of the Biology Class 11 book PDF are completely free to download and read on any device.