CBSE Class 12 Biology syllabus 2021

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CBSE Class 12 Biology syllabus is exercising for board exam mixtures. Referring to the syllabus will help you learn the curriculum for the Biology subject evenly, helping you to sustain track of all the topics and divisions to be exposed for keep exams. The syllabus covers the marking design of the Biology exam that can help you select which problems to cover first and how to progress with the learning. The syllabus also unites topics for reasonable examination, directed books, and the internal examination listing project for Class 12 Biology. 

Class 12 Biology Syllabus comprises topics like replication – binary fission, the untruth of the flower, seed dispersal weight, budding, sporulation, and fragmentation, vegetative repetition, pollination, and fruit corresponding. You will also study the thoughts of the kingdom such as codominance, chromosomes, ancestry collections, and genes. You will learn about DNA, RNA, generative code, gene character, and how life started and was delivered. Other topics include how various citizens live in relevant habitats, ecosystems, and fellowship qualities. 

You can the CBSE Class 12 Biology syllabus of efficiently for your firm. Along with the Class 12 syllabus for Biology, organizations, and study detailers. You can intrigue in our live sources, we also proffer a comprehensive CBSE study object. This includes division notes, revision notes, mindmaps, test series, mock tests, where will teach you all the basic to complicated ideas in the easy-to-understand dictionary. Our study rocks are based on the most slowed CBSE syllabus and exam copy for Class 12 Biology. 

Chapter-wise CBSE Class 12 Biology Syllabus 


The Class 12 Biology syllabus for 2021-22 struggles with 5 units and 16 chapters. These units comprise 70 marks in total while 30 marks are allocated to unrestricted analysis and subjective estimates. 

CBSE Class 12 Biology Syllabus.

Unit 1: Reproduction 

Reproduction, flower structure, modes of generation, sexual and asexual reproduction, pollination, procreative spirit, vegetative breeding in scrubs, male and female conceptive systems, birth control 

14 marks

Unit 2: Genetics and Evolution 

Principles of inheritance and correction, Darwin’s theory of improvement, Mendelian inheritance, inheritance of blood groups, chromosome theory of inheritance, sex stamina, biological evolution, central conviction, Lamarck’s theory of use and disuse of organs, DNA fingerprinting, evolution, the arrangement of DNA and RNA, Hardy – Weinberg’s principle, human progression 

18 marks

Unit 3: Biology and Human Welfare 

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

14 marks

Unit 4: Biotechnology and Its Applications 

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genetically changed organisms, human insulin, employment of biotechnology in strength and agriculture, RNA arrest, gene therapy, biosafety issues, Biotechnology, its principles, human insulin, employment of biotechnology in strength and agriculture, and importance, genetic engineering

10 marks

Unit 5: Ecology and Environment 

Organisms and populations, air pollution, solid waste supervision, ozone layer depletion, ecological adaptations, structure and expectations of the ecosystem, habitat and niche, people communications, biosphere reserves, environmental issues, conservation of biodiversity, contaminated waste management, loss of biodiversity, ecosystem, national diamonds, wildlife, and deforestation 

14 marks


70 Marks 

CBSE Class 12 Biology Syllabus FAQs

#1 Why is the Class 12 Biology Syllabus fixed? 

Class 12 Biology syllabus is an important life that helps you in study unfolding for the board exam. When you have a file of all to be examined for the exam, you can formulate a study plan consequently. The syllabus also helps you clasp a document of all your scholarship courses. You can color-code the topics based on their charge or the questions that you have developed and are yet to be prepared. The syllabus also implies the exam model and the marking scheme for biology Class 12. 

#2 What is the synopsis for CBSE Class 12 Biology operative test? 

The practical examination compounds 30 marks in total. Students will be assessed based on one influential investigation, practical record, spotting, viva voce, one minor exercise, slide formation, and project record. 

#3 How to assist with the Class 12 Biology exam? 

  • Read the CBSE syllabus for Class 12 Biology perfectly and discover the exam study and sealing design. 
  • Complete all the basic techniques and do not inquire any further topics. Prefer permits only for NCERT books. 
  • Use flashcards to memorize critical terms and diagrams, for instance, the building of a meeting et cetera
  • Practice earlier year board exam papers and sample papers to understand your areas of plasticity and powers in the subject 
  • Take online CBSE coaching from skillful tutors to learn all the typical assumptions of biology with satisfaction 

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

the total syllabus for CBSE Class 12 Biology 2021-22 from the askIITians website and propose your right with our study supplies. We follow the latest CBSE guidelines and exam fertile to deliver the best study estimates for Class 12 Biology: 

  • Chapter Notes, Revision Notes 
  • Online lessons, Live Classes
  • Previous Year Papers for Class 12 Biology 
  • Class 12 Biology NCERT Solutions 
  • Mindmaps, Flashcards, Study Planners 
  • Chapter tests, Unit tests & more! 
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