CBSE Class 12 Biology Syllabus 2021 (Reduced): Students Must Read

CBSE Class 12 Biology Syllabus 2021 – Central Board of Secondary Edu has uncovered the most nighttime syllabus for Class 12 Biology. Students can download the CBSE Class 12th Biology Syllabus 2021 practicing the link conferred below. Also, they can enter CBSE 12th Biology syllabus 2021 from the regular site case. The CBSE syllabus 2021 Class 12 Biology consists of all the sections and topics for the system exam along with the views of the practicals. Students can check the mark allocated for the special unit from the CBSE Class 12 Biology Syllabus 2021. The syllabus is designed in pdf construction, which students can refer to while reducing for the CBSE 12th exams.


Students will be able to check all the great and high-weightage topics from the syllabus and explain them fairly for the exams. The CBSE 12th Class Biology Syllabus will be marked in acad as well as competitive exams. Read the complete description to read the CBSE Class 12 syllabus 2021 for biology.


What are the serious problems of the CBSE Class 12 Biology Syllabus 2020-21?

Some of the features of each chapter are presented here for ease of students. For a distinct CBSE 12th biology syllabus 2021, students can download the pdf file applying the link implemented above.

  • Sexual Reproduction in Flowering Plants:
    • Flower structure
    • Pollination
    • Pollen-pistil interaction
    • Post fertilization events, etc.
  • Human Reproduction
    • Menstrual cycle; fertilization,
    • microscopic anatomy of testis and ovary,
    • parturition (elementary idea); lactation (elementary idea), etc.
  • Reproductive Health
    • IVF, ZIFT, Amniocentesis,
    • contraception and medical termination of pregnancy, etc.
  • Principles of Inheritance And Variation
    • Multiple alleles and inheritance of blood groups,
    • Sex determination – in humans,
    • Birds and honey bees, hemophilia, color blindness, etc.
  • Molecular Basis of Inheritance
    • Genetic code, Translation,
    • Gene expression and regulation,
    • Structure of DNA and RNA, etc.
  • Human Health and Disease
    • Pneumonia, the common cold,
    • Basic concepts of immunology – vaccines;
    • Cancer, drug and alcohol abuse, etc.
  • Microbes in Human Welfare
    • Antibiotics;
    • Production, sewage treatment,
    • Energy generation, etc.
  • Biotechnology: Principles and Processes
    • Genetic Engineering (Recombinant DNA Technology).
  • Biotechnology and its Applications
    • Gene therapy;
    • Genetically modified organisms, transgenic animals;
    • Biosafety issues, etc.
  • Organisms and Population
    • Mutualism, competition,
    • Predation, birth rate, and death rate,
    • The age distribution, etc.
  • Biodiversity and Conservation
    • Red Data Book,
    • Biosphere reserves, patterns, importance;
    • Loss of biodiversity, etc.

CBSE Class 12th Biology Syllabus for practical




One Major Experiment

5 Marks


One Minor Experiment

4 Marks


Slide Preparation

5 Marks



7 Marks


Practical Record+Viva Voce

4 Marks


Project Record + Viva Voce

5 Marks



30 Marks



Prescribed Books for CBSE Class 12 Biology

CBSE directed NCERT Books for Class 12 Biology to complete the CBSE Class 12th Biology Syllabus 2021. It is required to connect to the NCERT book as it covers the whole syllabus in a concise and easily understandable style. Relevant pictures are also sponsored with each topic for better comprehension. Below is the list of donated books by CBSE:

  1. Biology, Class-XII, Published by NCERT
  2. Other related books and textbooks carried out by NCERT (including multimedia)
  3. Biology Additional Material. advisable on the CBSE website.

What chapters have been defeated in the 12th Biology CBSE 2021?

  • Reproduction in Organism
  • Evolution
  • Strategies for Enhancement in Food Production
  • Ecosystem
  • Environmental Issues

CBSE Class 12 Biology Preparation Tips 2021

While preparing for the CBSE Class 12th, students must perform some simple but valuable tips and tricks to defend choice in the same. Coming to Biology, it is a subject which will help you achieve very well in case you take it earnestly and give your best. Go through some of the best energy tips for CBSE 12th Biology.

  • Complete the Class 12th CBSE Biology syllabus 2021 as soon as practicable so that you can give the most exceptional time for revision.
  • Students must refer to the CBSE class 12 timetable 2021 and plan their studies individually.
  • Do not mug up the principles of Biology, try to understand the meaning of the same and significant notes. These notes will help you to study at the most extraordinary moment.
  • After producing the Class 12 Biology Syllabus CBSE 2021, students must solve the Class 12th question set. This will help them to know the exam guide and physical topics.
  • Dedicate maximum time for the analysis and do not neglect any doubts. Receive them right away and seek help from others in the function of a crisis. Also, do not accent about the elements, give your best and compare well in CBSE class 12 result 2021.

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