9th Class Biology Notes Punjab Board 2025-26



by Step Academy Official (Author)
Welcome to our 9th Class Biology Notes Punjab Board 2025 section! Here you will find chapter-wise solved exercises based on the latest Punjab Textbook Board syllabus. These solutions are prepared to help you understand concepts clearly and score better in exams. Whether you’re revising or solving past paper questions, these notes will be your best companion.
Please select:
- The Science of Biology
- Biodiversity
- The Cell
- Cell Cycle
- Tissues, Organs and Organ System
Biomolecules
Enzymes
Bioenergetics
Plant Physiology
Reproduction in Plants
Biostatistics
9th Class Biology Notes Punjab Board 2025 Chapter-wise
Chapter 1 – The Science of Biology
Introduces biology as the study of living organisms, its importance in everyday life, and its relationship with other sciences.
Chapter 2 – Biodiversity
Explains the variety of living organisms, their classification, and the importance of conserving biodiversity for the ecosystem.
Chapter 3 – The Cell
Covers the structure and function of cells as the basic units of life, including differences between plant and animal cells.
Chapter 4 – Cell Cycle
Describes the stages of cell growth and division, including mitosis and meiosis, and their role in reproduction.
Chapter 5 – Tissues, Organs and Organ System
Explores how cells form tissues, tissues form organs, and organs work together in systems to sustain life.
Chapter 6 – Biomolecules
Discusses essential biological molecules such as carbohydrates, proteins, lipids, and nucleic acids, and their functions.
Chapter 7 – Enzymes
Explains the nature and function of enzymes, their role in speeding up chemical reactions, and factors affecting their activity.
Chapter 8 – Bioenergetics
Covers energy production in living organisms, including photosynthesis in plants and respiration in animals.
Chapter 9 – Plant Physiology
Focuses on how plants carry out processes like water transport, photosynthesis, and respiration to survive and grow.
Chapter 10 – Reproduction in Plants
Explains different methods of plant reproduction, including sexual and asexual reproduction, and their significance.
Chapter 11 – Biostatistics
Introduces the use of statistical methods to collect, analyze, and interpret biological data for research and problem-solving.
About Our Notes:
STEP Academy’s notes are carefully prepared according to the latest 2025 syllabus issued by the Punjab Textbook Board. Each chapter includes:
Fully solved exercises
Multiple-choice questions (MCQs)
Short and long questions
Numerical problems (where applicable)
- Comprehensive Question
These notes are written in easy-to-understand language and are designed to help students prepare effectively for Board exams. All content is focused, well-organized, and suitable for school-based assessments and board exams.
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9th Class Biology Notes Punjab Board 2025 Video Lecture
Watch complete 9th Class Biology video lectures for the Punjab Board 2025-26 syllabus, covering all chapters from The Science of Biology to Biostatistics. These chapter-wise lectures explain concepts in simple language with examples, making it easier for students to understand and prepare for exams. Whether you need help with Biodiversity, The Cell, Enzymes, or Bioenergetics, our lectures are designed according to the latest SNC syllabus. Perfect for self-study, revision, and exam preparation.