The text book of Lakhmir Singh And Manjit Kaur Solutions for Class 10 Biology gives the students a detailed picture about each and every chapter. This book gives a wide range of ideas, concepts and examples related to the concepts mentioned in the chapter. The solutions provided in this book are unique and the answers are explained in a simpler manner.
The answers given in this book are explanatory and explained diagrammatically wherever necessary. The book consists of hundreds of questions on each chapter and covers the entire topics to be studied.
This book has all sorts of questions like multiple choice questions, match the following, name the following questions, fill in the blanks, very short answers, short answer type questions, long answer type questions and also questions based on diagrams. Students will get to know how to present the answer in the examination and will also come to know about the important points that must be included in the answers. This book builds confidence among the students and encourages them to learn more.
Chapter 1: Life Processes
Life processes as the name suggests the processes going on during life. The processes functioned together for the maintenance of life are called life processes. This chapter explains about 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 proper functioning of the body. This chapter also includes the metabolism of plants’ life cycle and structure. These are the series of processes that ensures that the organism is alive.
Chapter 2: Control and Coordination
Human body is a complex machine which 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 is 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 about the structure of neuron, tropic movements, reflux actions, hormones, reflex action, 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 idea about the different classes of reproduction that is sexual reproduction and asexual reproduction. It gives a detailed description about 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 population.
Chapter 4: Heredity and Evolution
The process by which the features of an organism is passed on from one generation to another is called heredity. This chapter gives us the brief idea on 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 helps the student to understand the concepts in detail. The theories of evolution, its types and 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 on 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 since 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 these 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 on how today’s young generation are exploiting the environment and how to deal with it.
Chapter 6: Management Of Natural Resources
The chapter management of natural resources focuses on sustainable development of the resources. This also gives us ideas on 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 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 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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