The Biology book for Punjab Board Class 11 covers a wide range of topics related to the study of living organisms. The book is divided into several chapters, each of which covers a specific area of biology. Here is a brief overview of each chapter:’
1st Year Biology Textbook all Chapters for Punjab Board

Chapter 1: Introduction to Biology This chapter provides an introduction to the field of biology, its history, and its importance in the modern world. It also covers the various branches of biology and the tools and techniques used in biological research.
Chapter 2: Biological Molecules This chapter covers the structure and function of biological molecules such as carbohydrates, lipids, proteins, and nucleic acids. It also discusses the various biochemical pathways that occur in living organisms.
Chapter 3: Enzymes Enzymes are biological catalysts that play a crucial role in various biochemical processes. This chapter covers the structure, function, and regulation of enzymes.
Chapter 4: The Cell The cell is the basic unit of life, and this chapter covers its structure and function. It also discusses the different types of cells and their role in living organisms.
Chapter 5: Variety of Life This chapter covers the diversity of life on Earth, including the classification of organisms, the characteristics of different kingdoms of life, and the evolutionary relationships between living organisms.
Chapter 6: Kingdom Monera Monera are a group of unicellular organisms that lack a nucleus. This chapter covers the structure, function, and ecological significance of bacteria.
Chapter 7: Kingdom Protista Protista are unicellular eukaryotic organisms that are not plants, animals, or fungi. This chapter covers the structure, function, and ecological significance of protists.
Chapter 8: Kingdom Fungi Fungi are eukaryotic organisms that are heterotrophic and obtain nutrients through absorption. This chapter covers the structure, function, and ecological significance of fungi.
Chapter 9: Kingdom Plantae Plants are multicellular eukaryotic organisms that are capable of photosynthesis. This chapter covers the structure, function, and ecological significance of plants.
Chapter 10: Kingdom Animalia Animals are multicellular eukaryotic organisms that are heterotrophic and capable of movement. This chapter covers the structure, function, and ecological significance of animals.
Chapter 11: Bioenergetics Bioenergetics is the study of the energy transformations that occur in living organisms. This chapter covers the various metabolic pathways involved in energy production and consumption.
Chapter 12: Nutrition Nutrition is the study of how living organisms obtain and use nutrients. This chapter covers the different types of nutrients required by living organisms and the various processes involved in their absorption and utilization.
Chapter 13: Gaseous Exchange Gaseous exchange is the process by which living organisms exchange gases with the environment. This chapter covers the mechanisms of gaseous exchange in plants and animals.
Chapter 14: Transport Transport is the process by which substances are moved from one part of the body to another. This chapter covers the various transport systems in plants and animals, including the circulatory system and the xylem and phloem in plants.
Chapter 15: Homeostasis Homeostasis is the maintenance of a stable internal environment in living organisms. This chapter covers the various mechanisms involved in homeostasis, including the endocrine system, the nervous system, and the excretory system.
Chapter 16: Support and Movement Support and movement are essential for the survival of living organisms. This chapter covers the various mechanisms of support and movement in plants and animals.
Chapter 17: Reproduction Reproduction is the process by which living organisms produce offspring. This chapter covers the different modes of reproduction, including sexual and asexual reproduction.