The NCERT Exemplar book for Class 12 Biology is a supplementary resource designed to enhance the understanding and application of concepts covered in the NCERT textbook. It contains a collection of well-crafted questions that are categorized chapter-wise according to the NCERT syllabus.
The Exemplar book is divided into 16 chapters, covering various topics in Biology, including Genetics and Evolution, Biotechnology, Ecology, Human Reproduction, and more. Each chapter focuses on specific concepts and provides a comprehensive set of questions to test the students’ knowledge and analytical skills.
Here is a brief overview of the chapters in the NCERT Exemplar book for Class 12 Biology:
- Reproduction in Organisms: This chapter discusses various modes of reproduction in organisms, including asexual and sexual reproduction.
- Sexual Reproduction in Flowering Plants: It covers the structure and functions of flowers, pollination mechanisms, and the process of sexual reproduction in flowering plants.
- Human Reproduction: This chapter explores human reproductive organs, the process of gamete formation, fertilization, and the development of the embryo.
- Reproductive Health: It focuses on the importance of reproductive health, common reproductive disorders, and methods of contraception.
- Principles of Inheritance and Variation: This chapter explains the principles of inheritance, laws of Mendelian inheritance, and the concepts of variation and mutation.
- Molecular Basis of Inheritance: It delves into the structure of DNA, replication, transcription, translation, and the role of DNA in inheritance.
- Evolution: This chapter covers the theories of evolution, evidences supporting evolution, and the process of speciation.
- Human Health and Disease: It discusses various diseases, including infectious and non-infectious diseases, their causes, and preventive measures.
- Strategies for Enhancement in Food Production: This chapter explores various agricultural practices, animal husbandry, and biotechnological advancements in food production.
- Microbes in Human Welfare: It focuses on the beneficial and harmful effects of microbes, industrial uses of microorganisms, and their role in sewage treatment.
- Biotechnology: Principles and Processes: This chapter introduces the principles and processes of biotechnology, including genetic engineering, DNA fingerprinting, and its applications.
- Biotechnology and its Applications: It further explores the applications of biotechnology in various fields, such as healthcare, agriculture, and environmental conservation.
- Organisms and Populations: This chapter discusses the interactions between organisms and their environment, population growth, and ecosystem dynamics.
- Ecosystem: It covers the components of ecosystems, energy flow, nutrient cycling, and ecological balance.
- Biodiversity and Conservation: This chapter focuses on the importance of biodiversity, threats to biodiversity, and conservation measures.
- Environmental Issues: It addresses various environmental issues, including pollution, deforestation, and global warming, and emphasizes the need for sustainable development.
The NCERT Exemplar book includes a variety of questions, such as multiple-choice questions, short answer questions, long answer questions, and application-based questions. These questions are designed to test the students’ understanding, critical thinking, and problem-solving skills.
Overall, the NCERT Exemplar book for Class 12 Biology serves as a valuable resource for students to practice and reinforce their understanding of key concepts and prepare effectively for examinations.