The World of the Living

This chapter defines biodiversity and discusses its importance. It explains some practices which are a threat to biodiversity and enlists some methods to conserve it. It also explains the role of IUCN in detail here.

This chapter explains the discovery and parts of a cell and states the postulates of cell theory. Here, we will learn to differentiate between plant and animal cells. It describes the functions of cell organelles and discusses the importance of cell division.

This chapter explains different modes of reproduction with examples. It describes the male and female reproductive system and the process of development of the embryo in detail. Here, we will also learn to distinguish between viviparous and oviparous animals.

This chapter defines the stage of puberty and enlists some changes that occur during puberty. It explains reproductive phase and the significance of reproductive health. It describes the human endocrine system and the process of sex determination in humans.