CBSE Class 12 Biology syllabus is necessary for board exam preparations. Referring to the syllabus will help you learn the curriculum for the Biology subject easily, helping you to sustain track of all the topics and chapters to be served for board exams. The syllabus covers the marking project of the Biology exam that can help you decide which topics to cover first and how to progress with the learning. The syllabus also consolidates topics for practical examination, recommended books, and the internal appraisal marking scheme for Class 12 Biology. 

 Class 12 Biology Syllabus comprises topics like asexual propagation – binary fission, budding, sporulation, and fragmentation, vegetative propagation, the structure of the flower, seed dispersal significance, and fruit formation. You will also study the theories of inheritance such as codominance, chromosomes, blood combinations, and genes. You will learn about DNA, RNA, genetic code, gene expression, and how life started and evolved. Other topics include how various populations live in special habitats, ecosystems, and population properties. 

You can download the CBSE Class 12 Biology syllabus from the askIITians website easily for your organization. Along with the Class 12 syllabus for Biology, we also present a complete CBSE study matter. This includes chapter notes, change notes, mindmaps, flashcards, mock tests, test series, and study planners. You can enroll in our live classes, where our specialists will teach you all the basic to complex ideas in easy to comprehend language. Our study materials are completely based on the slowest CBSE syllabus and exam pattern for Class 12 Biology. 

Chapter-wise CBSE Class 12 Biology Syllabus  

The Class 12 Biology syllabus for 2021-22 contains 5 units and 16 chapters. These units include 70 marks in total while 30 marks are allocated to practical analysis and subjective assessments. 

CBSE Class 12 Biology Syllabus.

Unit 1: Reproduction 

Reproduction, modes of reproduction, sexual and asexual reproduction, pollination, vegetative propagation in plants, male and female reproductive systems, flower structure, reproductive health, birth control 

14 marks

Unit 2: Genetics and Evolution 

Principles of inheritance and variation, chromosome theory of inheritance, sex determination, inheritance of blood groups, the structure of DNA and RNA, Darwin’s theory of evolution, DNA fingerprinting, evolution, biological evolution, central dogma, Mendelian inheritance, Lamarck’s theory of use and disuse of organs, Hardy – Weinberg’s principle, human evolution 

18 marks

Unit 3: Biology and Human Welfare 

Human health and disorders, the immune system in human beings, vaccination, animal husbandry, plant breeding, single-cell protein, antibiotics, microbes in food processing, parasites causing human diseases, bio-gas fertilizers, bio-control agents 

14 marks

Unit 4: Biotechnology and Its Applications 

Biotechnology, its principles, and applications, genetically modified organisms, human insulin, RNA interference, genetic engineering, gene therapy, biosafety issues, applications of biotechnology in health and agriculture

10 marks 

Unit 5: Ecology and Environment 

Organisms and populations, habitat and niche, population interactions, ecological adaptations, structure and functions of the ecosystem, loss of biodiversity, ozone layer depletion, conservation of biodiversity, national parks, wildlife, biosphere reserves,  ecosystem, environmental issues, air pollution, radioactive waste management, solid waste management, and deforestation 

14 marks



70 Marks 


CBSE Class 12 Biology Syllabus FAQs

#1 Why is the Class 12 Biology Syllabus important? 

Class 12 Biology syllabus is an extensive document that helps you in study preparation for the board exam. When you have a list of all the topics to be considered for the exam, you can develop a study plan accordingly. The syllabus also helps you keep a report of all your learning progress. You can color-code the materials based on their difficulty or the questions that you have created and are yet to be done. The syllabus also symbolizes the exam guide and the marking scheme for biology Class 12. 

#2 What is the syllabus for CBSE Class 12 Biology practical examination? 

The practical examination constitutes 30 marks in total. Students will be assessed based on one major research, one minor experiment, slide preparation, practical record, viva voce, and project record. 

#3 How to provide for the Class 12 Biology exam? 

Read the CBSE syllabus for Class 12 Biology carefully and identify the exam guide and ticketing scheme. 

Complete all the basic theories and do not study any additional topics. Prefer expressing only NCERT books. 

Use flashcards to memorize relevant terms and diagrams, for instance, the structure of a cluster et cetera

Practice previous year board exam papers and sample papers to recognize your areas of weaknesses and strengths in the subject 

Take online CBSE coaching from proficient tutors to understand all the typical notions of biology and biotechnology with ease 

#4 How can AskIITians help you to provide for Class 12 Biology? 

Download the entire syllabus for CBSE Class 12 Biology 2021-22 from the askIITians website and begin your fitness with our study resources. We follow the most advanced CBSE guidelines and exam pattern to create the best study sources for Class 12 Biology: 

Chapter Notes, Revision Notes 

Class 12 Biology NCERT Solutions 

Online lessons, Live Classes, Pre-recorded Lessons

Previous Year Papers for Class 12 Biology 

Mindmaps, Flashcards, Study Planners 

Chapter tests, Unit tests & more!