About this textbook
Class 12 Biology Book is a free textbook for Class 12 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 13 chapters, from Thermoregulation and Osmoregulation to Ecology. Work through it one chapter at a time, and test yourself after each one.
- Class
- Class 12
- Subject
- Biology
- Type
- Class 12 Books
- Year
- 2026
- Board
- BISE Punjab (all boards)
- Price
- Free
Preview
What’s inside
The Biology chapters for Class 12 in the Punjab syllabus.
- 1Thermoregulation and Osmoregulation
- 2Human Urinary System
- 3Human Nervous System
- 4Human Endocrine System
- 5Human Reproductive System
- 6Inheritance
- 7Chromosome and DNA
- 8Biotechnology
- 9Immunity
- 10Biostatistics
- 11Pharmacology
- 12Evolution
- 13Ecology
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 12 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 12 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 12 biology mcqs on Parho. Each test is marked straight away, and the questions you miss go into your mistake notebook.