CBSE Class 12 Biology Board Exam 2025: Check 5-Months Plan for Full Marks

Month

Week

Chapter

Topics To Focus

Month 1: Reproduction

Week 1

Chapter 2: Sexual Reproduction in Flowering Plants

• Focus on flower structure, gametophyte development, pollination types, and double fertilization.
• Review diagrams and summarize key processes.
• Practice questions on pollination and fertilization.

Week 2

Chapter 3: Human Reproduction

• Study male and female reproductive systems, gametogenesis, and embryo development up to implantation.
• Create flowcharts of gametogenesis and the menstrual cycle.
• Practice questions on fertilization and embryo development.

Week 3

Chapter 4: Reproductive Health

• Understand reproductive health needs, STD prevention, and assisted reproductive technologies.
• Summarize birth control methods and their significance.
• Discuss infertility treatments and their implications.

Week 4

Revision of Chapters 2-4

• Take practice tests and create summary notes for quick revision.

Month 2: Genetics and Evolution

Week 1

Chapter 5: Principles of Inheritance and Variation

• Focus on Mendelian inheritance, deviations, and chromosomal theory.
• Solve genetic problems and summarize Mendelian disorders.

Week 2

Chapter 6: Molecular Basis of Inheritance

• Study DNA and RNA structure, replication, and central dogma.
• Create a diagram of DNA replication and summarize gene expression processes.

Week 3

Chapter 7: Evolution

• Learn about the origin of life, evidence for evolution, and mechanisms of evolution.
• Discuss Darwin's contributions and summarize modern evolutionary theories.

Week 4

Revision of Chapters 5-7

• Take quizzes and practice previous years' exam questions.

Month 3: Health and Biotechnology

Week 1

Chapter 8: Human Health and Diseases

• Study pathogens and parasites causing diseases, immunology basics, and drug abuse.
• Create a table of diseases and their controls.
• Review vaccine concepts.

Week 2

Chapter 10: Microbes in Human Welfare

• Focus on the role of microbes in food processing and industrial production.
• Summarize key applications of microbes and the importance of antibiotics.

Week 3

Chapter 11: Biotechnology - Principles and Processes

• Understand genetic engineering and recombinant DNA technology.
• Summarize important techniques and their applications in various fields.

Week 4

Chapter 12: Biotechnology and its Applications

• Learn about biotechnological applications in health and agriculture.
• Discuss case studies of GMOs and bio-safety issues.

Month 4: Ecology and Environment

Week 1

Chapter 13: Organisms and Populations

• Study population interactions and attributes.
• Create diagrams to illustrate different population interactions.

Week 2

Chapter 14: Ecosystem

• Understand ecosystem components, productivity, and energy flow.
• Practice questions on energy pyramids and ecosystem dynamics.

Week 3

Chapter 15: Biodiversity and its Conservation

• Learn about biodiversity concepts, patterns, and conservation strategies.
• Summarize key conservation efforts and case studies.

Week 4

Revision of Chapters 13-15

• Take mock tests and practice with sample questions.

Month 5: Intensive Revision and Mock Tests

Week 1

Improve Weak Areas

• Solve the practice papers and work on your weak areas.

Week 2

Practice Exam Pattern

• Solve sample papers and practice similar questions.

Week 3

Master Important Questions

• Practice questions from previous years to identify recurring topics and boost your confidence for the exam.

Week 4

Revise, Revise and Revise

• Revise difficult topics and recall important concepts from syllabus.