Lakhmir Singh Solutions Class 10 Biology

The Lakhmir Singh And Manjit Kaur Solutions textbook for Class 10 Biology provides the students with a comprehensive picture of each and every chapter. The book includes a broad variety of theories , principles and explanations relevant to the topics in the chapter described. The ideas given in this book are special, and they describe the responses in a simplified way.

The answers provided in this book are diagrammatically informative and clarified where possible. The book is made up of hundreds of questions per chapter and covers all the topics to be studied.


Chapter 1 Life Processes


Chapter 2 Control and Coordination


Chapter 3 How do Organisms Reproduce?


Chapter 4 Heredity and Evolution


Chapter 5 Our Environment


Chapter 6 Management Of Natural Resources


Chapter 1 Life Processes

Life processes as the name suggest the processes going on during life. The processes functioned together for the maintenance of life are called life processes. This chapter explains the different processes going on in a living organism. A living organism undergoes many life processes like nutrition, respiration, digestion, transportation, excretion, circulation of blood, and reproduction. It also includes the life processes of unicellular and multicellular organisms. These processes are very vital for an organism to stay alive and to maintain the proper functioning of the body. This chapter also includes the metabolism of plants’ life cycle and structure. These are the series of processes that ensure that the organism is alive.

Chapter 2 Control and Coordination

The human body is a complex machine that performs various functions to keep the body fit and fine. The working together of various organs of the body of an organism in a controlled manner to produce an appropriate reaction to a stimulus is called coordination. The control and coordination of all the organs of an organism are done by the central nervous system of the body. This chapter includes the working of the nervous system and its consequences. This chapter also gives a detailed picture of the structure of a neuron, tropic movements, reflex actions, hormones, reflex action, the human brain, and also about types of nerves. These topics are explained diagrammatically and include all the pinpoints of the concepts.

Chapter 3 How do Organisms Reproduce?

The life on this planet earth is from hundreds of generations ago and will continue for hundreds of generations. This continuity of generations is due to the biological process called reproduction. Reproduction is defined as the process in which an organism gives birth to its young ones. This chapter gives us an idea about the different classes of reproduction that is sexual reproduction and asexual reproduction. It gives a detailed description of the reproduction process taking place in plants as well as animals. The chapter also includes the fertilization process, menstrual cycle in females. The chapter highlights the process of pollination taking place in plants and also on measures to control the population.

Chapter 4 Heredity and Evolution

The process by which the features of an organism are passed on from one generation to another is called heredity. This chapter gives us a brief idea of how the evolution of organisms takes place. The experiment of Gregor Johann Mendel, known as ‘Father of Genetics’, is described. Heredity, genes, evolution, and its classification help the student to understand the concepts in detail. The theories of evolution, its types, and the laws of inheritance are all described in the chapter. Heredity and Evolution is a vast topic and is covered in this lesson in a shortened and easy manner. It also covers a wide range of examples of different kinds of heredity and evolution. This chapter explains how the genes are carried to the next upcoming generation and how human life has evolved for years.

Chapter 5 Our Environment

The chapter on our environment includes the different types of components present in our environment. This lesson gives us detailed descriptions of the ecosystem, food chain, food web, and energy transformation from one organism to another. We will also learn about the different hazards happening in the environment. The environmental hazards include different kinds of pollution, global warming, some species getting extinct from the planet. The further consequences of this pollution are also mentioned in this chapter. This chapter also tells us how to control these hazards and how to prevent them. This chapter in general gives us the idea of how today’s young generation is exploiting the environment and how to deal with it.

Chapter 6 Management Of Natural Resources

The chapter management of natural resources focuses on the sustainable development of the resources. This also gives us ideas on the conservation of natural resources, wildlife, forest, and other natural resources. The resources which cannot be gained back are called natural resources. The chapter mainly deals with the control of water pollution and saving water. Water being the universal solvent is the urge of extinction. Hence this chapter has given us ideas on the Ganga action plan, construction of dams, preserving water, and rainwater harvesting. This chapter also highlights natural resources like coal and petroleum. This lesson tells us to use these resources judiciously and conserve them.

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