About this textbook
Class 11 Biology Book is a free textbook for Class 11 Biology students preparing for the BISE Punjab board exams, from 2026. It follows the Punjab syllabus, which is the same for every board in the province.
You can read it on this page, or download it and study without internet. The Biology syllabus it belongs to has 12 chapters, from Biodiversity and Classification to Human Skeletal and Muscular Systems. Work through it one chapter at a time, and test yourself after each one.
- Class
- Class 11
- Subject
- Biology
- Type
- Class 11 Books
- Year
- 2026
- Board
- BISE Punjab (all boards)
- Price
- Free
Preview
What’s inside
The Biology chapters for Class 11 in the Punjab syllabus.
- 1Biodiversity and Classification
- 2Bacteria and Viruses
- 3Cells and Subcellular Organelles
- 4Biological Molecules
- 5Enzymes
- 6Bioenergetics
- 7Structural and Computational Biology
- 8Plant Physiology
- 9Human Digestive System
- 10Human Respiratory System
- 11Human Circulatory System
- 12Human Skeletal and Muscular Systems
How to study with it
- 1Read one chapter at a time, from start to finish, before you look at questions.
- 2Mark definitions, formulas and key terms as you go. Board MCQs are built from exactly these.
- 3Straight after a chapter, take the free Biology chapter tests on Parho. It is marked the moment you finish.
- 4Before the next chapter, go through the questions you got wrong. Parho keeps them in your mistake notebook.
Questions
Is this textbook free to download?
Yes. Class 11 Biology Book is free to read on this page and to download, and you do not need an account.
Which board and syllabus is it for?
It is for Class 11 Biology, following the Punjab syllabus used by every BISE Punjab board, including Lahore, Rawalpindi, Gujranwala, Faisalabad, Multan and Sargodha.
How do I save it to my phone?
Tap Download. The file opens from Google Drive and is saved to your phone, where it opens without an internet connection.
How can I practise after reading it?
Use the practice tests for class 11 biology mcqs on Parho. Each test is marked straight away, and the questions you miss go into your mistake notebook.