11 biology notes punjab board

Read Class 11 Biology Notes Online – Punjab Board (2025–2026)

Free, SLO-based Biology notes for 1st Year (HSSC Part 1) students under Punjab Board (BISE). Aligned with the latest PCTB syllabus. Includes solved MCQs, short questions, and long questions for all chapters. Read instantly on any device - no download required.

Chapter 1 : Biodiversity and Classification
Chapter 2 : Bacteria and Viruses
Chapter 3 : Cells and Subcellular Organelles
Chapter 4 : Molecular Biology
Chapter 5 : Enzymes
Chapter 6 : Bioenergetics
Chapter 7 : Structural and Computational Biology
Chapter 8 : Plant Physiology
Chapter 9 : Human Digestive System
Chapter 10 : Human Respiratory System
Chapter 11 : Human Circulatory System
Chapter 12 : Human Skeletaland Muscular Systems

Quick Information - Class 11 Biology Notes

BoardPunjab Board (BISE)
ClassClass 11 / 1st Year / HSSC Part 1
SubjectBiology
Session2025-2026
Content TypeSolved Notes - SLO Based
FormatOnline / Web View (Read Only)

Overview

These are comprehensive, SLO-based Class 11 Biology notes for students studying under Punjab Board (BISE) - also referred to as 1st Year or HSSC Part 1. They are aligned with the 2025–2026 syllabus of the Punjab Curriculum and Textbook Board (PCTB).

All notes are available for online reading only. No download is required. They open directly in your browser and are continuously updated to reflect any PCTB syllabus revisions - making them more reliable than any static PDF found online.

Syllabus Coverage

These notes are fully aligned with the Punjab Curriculum and Textbook Board (PCTB) Class 11 Biology syllabus for 2025–2026. All 14 chapters are covered according to the official BISE HSSC Part 1 examination pattern.

  1. Introduction to Biology - scope, branches, and biological methods
  2. Biological molecules - carbohydrates, proteins, lipids, nucleic acids
  3. Enzymes - structure, properties, and mechanism of action
  4. The cell - prokaryotic vs eukaryotic, cell organelles in detail
  5. Variety of life - classification systems and kingdoms
  6. Kingdom Prokaryotae, Protista, Fungi, Plantae, and Animalia
  7. Bioenergetics - photosynthesis and respiration
  8. Nutrition - autotrophic and heterotrophic nutrition
  9. Gaseous exchange - in plants, animals, and humans
  10. Solved MCQs following the official BISE HSSC Part 1 pattern
  11. Short and long questions aligned with board exam criteria

Valid for All Punjab BISE Boards

These Class 11 Biology notes are based on the PCTB syllabus, which is identical across all nine Punjab BISE boards. Students from every Punjab district can use these notes for their HSSC Part 1 exams.

  1. BISE Lahore
  2. BISE Gujranwala
  3. BISE Faisalabad
  4. BISE Multan
  5. BISE Rawalpindi
  6. BISE Sargodha
  7. BISE Bahawalpur
  8. BISE DG Khan
  9. BISE Sahiwal

These notes are provided strictly for educational purposes.

FAQs

Can I read these Punjab Board Biology notes on my mobile?
Yes. These Class 11 Biology notes are fully responsive and optimised for all screen sizes. You can read them on any Android or iOS device without any app or download.
Are these 1st Year Biology notes updated for the 2025 syllabus?
Yes. These notes are fully updated for the 2025–2026 session and aligned with the latest PCTB syllabus for Class 11 Biology (HSSC Part 1). They are reviewed whenever the PCTB revises the curriculum.
Do these Class 11 Biology notes include solved exercises and MCQs?
Yes. Every chapter includes solved MCQs, short questions, long questions, and complete textbook exercises - all structured to match the Punjab Board HSSC Part 1 paper pattern.
Are these notes valid for all Punjab BISE boards?
Yes. These notes follow the uniform PCTB syllabus applicable to all nine Punjab BISE boards - Lahore, Gujranwala, Faisalabad, Multan, Rawalpindi, Sargodha, Bahawalpur, DG Khan, and Sahiwal.
Are these 1st Year Biology notes SLO-based?
Yes. These are SLO (Student Learning Outcome) based notes. Each section is structured around the specific outcomes defined by the Punjab Curriculum and Textbook Board (PCTB), ensuring full syllabus coverage for Class 11 Biology.
Do these notes cover numerical problems for Class 11 Biology?
Where applicable, numerical and data-based questions are included as per the PCTB Class 11 Biology syllabus and BISE HSSC Part 1 paper pattern.
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