Exploring the High-Scoring Chapters of CBSE Class 12 Biology

As class 12th students are getting ready for the board exams, mastering Biology is important for securing good scores. To enhance your board preparation, it is essential to know the important topics and chapters that can help you score more in the board examinations. In this article, we will identify the high-scoring topics in CBSE class 12th Biology aiding you in your preparation.

Chapter-Wise High-Scoring Topics for 12th Board Examination

Here, we have enlisted chapter-wise high-weightage topics that will help you to score well in the board examination. 

Chapter 1: Reproduction in Organisms

It is a major chapter in class 12th biology. The chapter covers asexual reproduction and sexual reproduction in organisms. The key topics in the chapters are:

1. Types of asexual reproduction in organisms such as binary fission, spore formation, and budding.

2. Structure and function of male and female reproductive organs in plants and animals.

3. Differentiate between asexual and sexual reproduction.

Chapter 2: Sexual Reproduction in Flowering Plants

The chapter includes the detailed process of sexual reproduction in flowering plants including asexual flowers, bisexual flowers, etc. The key topics of the chapter are:

1. Morphology of flower describing its structure and functions, pre-fertilization events.

2. Process of double fertilization and reproductive organs of flowering plants in detail.

Chapter 3: Human Reproduction

Human Reproduction is an intriguing and important topic covered in Class 12 CBSE Biology. This chapter digs into the complexities of human reproduction, looking at the male and female reproductive systems, gametogenesis, conception, pregnancy, and reproductive health. The key topics of this chapter are:

1. Detailed study of male and female reproductive organs.

2. Process of fertilization and pregnancy.

Chapter 4:  Reproductive Health

The chapter gives you an insight into how you can manage your reproductive health and live a better life. It is a significant lesson as it can teach the importance of hygienic practice. The key topics of the chapter are:

1. Learning about reproductive health and sexually transmitted diseases (STDs)

2. Use of contraceptives and other methods of birth control.

3. Technologies to treat infertility.

Chapter 5: Principles of Inheritance and Variations

It is an important chapter for boards as well as entrance exams. The chapter focuses on genetics and heredity. The key topics of the chapter are:

1. Mendel’s Law of Inheritance: monohybrid and dihybrid cross.

2. Post-Mendelian genetics.

3. Chromosomal disorders.

4. Sex determination and pedigree analysis

Chapter 6: Molecular Basis of Inheritance

In this, we going to learn about the DNA and molecular basis of inheritance in detail. DNA is an important part of our cells therefore understanding it is crucial. The key topics are:

1. Structure and replication of DNA

2. Transcription, translation, and genetic code.

3. Hershey and Chase’s experiment on genetic material

Chapter 7: Evolution

This chapter deals with the evolution of different life forms on Earth. Changes in Flora and Fauna, human evolution. The key topics are:

1. Different theories of evolution along with the evidence such as fossils, anatomy, etc.

2. Darwin’s Theory of Natural Selection.

3. Adaptive radiation.

4. Hardy-Weinberg Principle.

Chapter 8: Human Health and Diseases

The chapter defines the importance of healthy living, the impact of lifestyle on our health and different types of human diseases. The key topics of the chapter are:

1. The immune system, the importance of vaccinations, and types of immunity.

2. Lifecycle of plasmodium.

3. Causative agents of different diseases.

4. Differentiate between innate and adaptive immunity.

5. AIDS and drug abuse.

Chapter 9: Strategies for Enhancement in Food Production

This chapter includes the different techniques that can be utilized to enhance food production to meet the rising demands. The most important topics in this chapter are:

1. Animal husbandry and its management, Inbreeding vs. Outbreeding.

2. Techniques of plant breeding and its implementation in Agriculture.

Chapter 10: Microbes in Human Welfare

Microbes in Human Welfare includes a wealth of knowledge about microorganisms, including their use in the production of pharmaceuticals, food products, and waste management. The key topics in this chapter are:

1. Role of microbes in the production of antibiotics, vaccines, and industrial products.

2. Wastewater management for sustainable development.

3. Biogas production and Sewage treatment.

Chapter 11: Biotechnology

It is an important chapter as it includes the recent developments in the field of biotechnology and its applications. The key topics of this chapter include:

1. Restriction enzymes, Cloning, and transformation process.

2. BT Cotton, gene therapy, genetic engineering.

Chapter 12: Ecosystem

The coordinated interplay of living beings in the environment is referred to as an ecosystem. All of these rely on one another to survive. This comprises both terrestrial and aquatic ecosystems, which are made up of a variety of plants and animals. The important topics in this chapter are:

1. Pyramid of number, energy, and biomass.

2. Nutrient cycle and ecological succession.

Chapter 13: Environmental Issues

The study of different measures to reduce pollution is mainly included in the environmental issues. The key topics of this chapter are:

1. Air Pollution: causes and how to reduce it.

2. Eutrophication and biomagnification.

Conclusion

Hard work, consistency, and a positive mindset are important while preparing for the board examination. By focusing on the high-scoring topics described above one can easily get good marks in 12th boards. In addition, seeking expert guidance, practising the previous year’s question papers, and sticking to the latest exam pattern can help students excel in the board examination. 

Chaitanya Academy, a leading tuition and coaching centre in Pune and Baramati for grades 6th to 12th offers comprehensive classes for 11, 12, JEE, NEET, and MHT CET examination. The experts at the institute are well aware of the latest exam patterns and syllabus that help the students to study according to and utilize their time optimally. Join Chaitanya Academy to ace your board exams.