Biology

This chapter explores the different phases of the cell cycle. It briefs on cell division and its types. It discusses the important features, significance and various stages of mitosis and meiosis. We will also study the differences between mitosis and meiosis.

In this chapter, we will study the basic structure of chromosomes, different shapes of chromosomes and genes which are located on it. We will learn the structure of DNA and Watson and Crick model of DNA.

This chapter briefs on Mendel's experiments and the three laws of inheritance. It explains variations, mutations, monohybrid and dihybrid cross. We will study about sex-linked inheritance and diseases in humans.

This chapter explores the root system and its characteristics. We will learn the structure and importance of root hair. It explains the movement of water and minerals by root hair to leaves. It also discusses some important terms related to movement of water.

This chapter describes the process and significance of transpiration. Here, we will discuss the measurement and kinds of transpiration. It explains the factors affecting transpiration, including the adaptations in plants, to reduce excessive transpiration.

This chapter teaches us about photosynthesis which is an energy transfer process. It elucidates the composition and functions of chloroplasts in the process of photosynthesis. It discusses the stages and limiting factors of photosynthesis.

This chapter sheds light on plant growth regulators. It explains the functions of plant hormones and the discovery of plant growth regulators. We will also learn the physiological effects of plant growth regulators.

This chapter sheds light on the structure and functions of the heart. We will learn the functions and composition of blood. It explains in detail about blood groups and blood transfusion. It also discusses the conditions related to functioning of heart.

This chapter deals with the excretory system of humans. It describes the structure and functions of the kidney and nephron. We will learn about the formation and composition of urine. It also briefs on kidney disorders, artificial kidney and hemodialysis.

This chapter explains the mechanism of the nervous system through the diagram. It elaborates the central nervous system and its significant roles. We will also discuss the structure of a neuron and the process of the common reflex action.

This chapter sheds light on the functions of the endocrine system and the hormones secreted by them. It discusses the types of glands associated with the endocrine system. It also discusses the changes in the body due to hormone secretion.

This chapter sheds light on the human reproductive system. We will learn in detail about the male and female reproductive system. It discusses the structure and functions of sperm and ovum. It also explains the ovarian cycle in females.

This chapter sheds light on India's population, size, growth and distribution by density. It further discusses the process of population change, birth and death rate, occupational structure, sex ratio, adolescence, and national population policy.

This chapter discusses human evolution and the basic meaning of it. It explains the various theories of evolution like Lamarck????s theory, vestigial organs, and Darwin????s theory of natural selection. It also describes the various stages of human evolution.

In this chapter, we will study the theories of evolution. It explains Lamarck????s theory of acquired characteristics and Darwin????s theory of evolution by natural selection. It also explains in detail the adaptations of peppered moth.

This chapter discusses the sources of air and water pollution. It discusses their impacts on living beings and the environment, along with their preventive measures. It also describes the various methods of purification of water.