CBSE Class 12 Biology Syllabus 2022 (Reduced) - Download Pdf Here
CBSE Class 12 Biology Syllabus 2022-23 - Central Board of Secondary Education has released the syllabus for Class 12 Biology. Students can download the CBSE Class 12 Biology Syllabus 2022-23 using the link given below. Also, they can access CBSE 12th Biology syllabus 2022 from the official website, cbseacademic.nic.in.
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The CBSE syllabus 2022 Class 12 Biology consists of all the units, chapters, and topics for the theory exam along with the details of the practicals. Students can check the mark allotted for each unit from the CBSE Class 12 Biology Syllabus 2023. The syllabus is available in pdf format, which students can refer to while preparing for the CBSE 12th exams.
Syllabus link - Click here to download CBSE 12th class Biology syllabus 2022 pdf.
Students will be able to check all the important and high-weightage topics from the syllabus and prepare accordingly for the CBSE Board exams. The CBSE Class 12 Biology Syllabus 2022 will be helpful in academics as well as competitive exams. Read the complete article to know the CBSE Class 12 syllabus 2022 for biology.
CBSE Class 12 Biology Syllabus 2022-23
There are a total of 5 units in the syllabus of Biology. The theory papers consist of 70 marks and practical exams will be of 30 marks.
Genetics and Evolution
Biology and Human Welfare
Biotechnology and its Applications
Ecology and Environment
Important Topics of CBSE Class 12 Biology Syllabus 2022-23
Some of the topics of each chapter are given below for ease of students. For a detailed CBSE 12th biology syllabus 2022, students can download the pdf file using the link given above.
Chapter-2: Sexual Reproduction in Flowering Plants
Flower structure; development of male and female gametophytes; pollination - types, agencies and examples; out breeding devices; pollen-pistil interaction; double fertilization; post fertilization events - development of endosperm and embryo, development of seed and formation of fruit; special modes- apomixis, parthenocarpy, polyembryony; Significance of seed dispersal and fruit formation.
Chapter-3: Human Reproduction
Male and female reproductive systems; microscopic anatomy of testis and ovary; gametogenesis -spermatogenesis and oogenesis; menstrual cycle; fertilisation, embryo development upto blastocyst formation, implantation; pregnancy and placenta formation (elementary idea); parturition (elementary idea); lactation (elementary idea).
Chapter-4: Reproductive Health
Need for reproductive health and prevention of Sexually Transmitted Diseases (STDs); birth control - need and methods, contraception and medical termination of pregnancy (MTP); amniocentesis; infertility and assisted reproductive technologies - IVF, ZIFT, GIFT (elementary idea for general awareness).
Unit-VII Genetics and Evolution
Chapter-5: Principles of Inheritance and Variation
Heredity and variation: Mendelian inheritance; deviations from Mendelism – incomplete dominance, co-dominance, multiple alleles and inheritance of blood groups, pleiotropy; elementary idea of polygenic inheritance; chromosome theory of inheritance; chromosomes and genes; Sex determination - in humans, birds and honey bee; linkage and crossing over; sex linked inheritance - haemophilia, colour blindness; Mendelian disorders in humans - thalassemia; chromosomal disorders in humans; Down's syndrome, Turner's and Klinefelter's syndromes.
Chapter-6: Molecular Basis of Inheritance
Search for genetic material and DNA as genetic material; Structure of DNA and RNA; DNA packaging; DNA replication; Central Dogma; transcription, genetic code, translation; gene expression and regulation - lac operon; Genome, Human and rice genome projects; DNA fingerprinting.
Origin of life; biological evolution and evidences for biological evolution (paleontology, comparative anatomy, embryology and molecular evidences); Darwin's contribution, modern synthetic theory of evolution; mechanism of evolution - variation (mutation and recombination) and natural selection with examples, types of natural selection; Gene flow and genetic drift; Hardy - Weinberg's principle; adaptive radiation; human evolution.
Unit-VIII Biology and Human Welfare
Chapter-8: Human Health and Diseases
Pathogens; parasites causing human diseases (malaria, dengue, chikungunya, filariasis, ascariasis, typhoid, pneumonia, common cold, amoebiasis, ring worm) and their control; Basic concepts of immunology - vaccines; cancer, HIV and AIDS; Adolescence - drug and alcohol abuse.
Chapter-10: Microbes in Human Welfare
Microbes in food processing, industrial production, sewage treatment, energy generation andmicrobes as bio-control agents and bio-fertilizers. Antibiotics; production and judicious use.
Unit-IX Biotechnology and its Applications
Chapter-11: Biotechnology - Principles and Processes
Genetic Engineering (Recombinant DNA Technology).
Chapter-12: Biotechnology and its Applications
Application of biotechnology in health and agriculture: Human insulin and vaccine production, stem cell technology, gene therapy; genetically modified organisms - Bt crops; transgenic animals; biosafety issues, biopiracy and patents.
Unit-X Ecology and Environment
Chapter-13: Organisms and Populations
Population interactions - mutualism, competition, predation, parasitism; population attributes - growth, birth rate and death rate, age distribution. (Topics excluded: Organism and its Environment, Major Aboitic Factors, Responses to Abioitic Factors, Adaptations)
Ecosystems: Patterns, components; productivity and decomposition; energy flow; pyramids of number, biomass, energy (Topics excluded: Ecological Succession and Nutrient Cycles)
Chapter-15: Biodiversity and its Conservation
Biodiversity-Concept, patterns, importance; loss of biodiversity; biodiversity conservation; hotspots, endangered organisms, extinction, Red Data Book, Sacred Groves, biosphere reserves, national parks, wildlife, sanctuaries and Ramsar sites.
CBSE Class 12 Biology Syllabus 2023 for Practical
Also, check - NEET Syllabus 2022-23.
How to Download CBSE Class 12 Biology Syllabus 2022-23?
Follow the steps given below to download the CBSE 12th syllabus for Biology 2023 from the official website:
Step 1 - Go to the official website, cbseacademic.nic.in.
Step 2 - On the home page, click on the ‘Curriculum’ option.
Step 3 - Click on the ‘Senior Secondary Curriculum (XI-XII)’.
Step 4 - Select Academic Electives - (Group-A).
Step 5 - Now click on the Biology tab. The CBSE Class 12 Biology Syllabus 2023 will get displayed on your screens. Save the syllabus in pdf format.
Also, Read - CBSE Class 12 Preparation Tips for Chemistry
Prescribed Books for CBSE Class 12 Biology
CBSE prescribed NCERT Books for Class 12 Biology to complete the CBSE Class 12 Biology Syllabus 2022-23. It is important to refer to the NCERT book as it covers the entire syllabus in a simple and easily understandable language. Relevant diagrams are also provided with each topic for better understanding. Below is the list of prescribed books by CBSE:
Biology, Class-XII, Published by NCERT
Other related books and manuals brought out by NCERT (including multimedia)
Biology Supplementary Material (Revised). available on CBSE website.
While preparing for the CBSE Class 12th, students must implement some simple but effective tips and tricks to score well in the same. Coming to Biology, it is a subject which will help you score very well in case you take it seriously and give your best. Go through some of the best preparation tips for CBSE 12th Biology.
Complete the CBSE Class 12 Biology syllabus 2022-23 as soon as possible so that you can give maximum time for revision.
Students must refer to the CBSE class 12 time table 2022-23 and plan their studies accordingly.
Do not mug up the theories of Biology, instead, try to understand the meaning of the same and make personal notes. These notes will help you to revise at the last moment.
After completing the CBSE Class 12 Biology Syllabus 2022, students must solve the CBSE Class 12 question papers 2022-23. This will help them to know the exam pattern, marking scheme and important topics.
Dedicate maximum time for the revision and do not ignore any doubts. Clear them right away. Seek help from others in case of confusion. Also, do not stress about the board, instead, give your best and score well in CBSE class 12 result 2022-23.
Also, Read other subject-wise tips
Frequently Asked Question (FAQs) - CBSE Class 12 Biology Syllabus 2022 (Reduced) - Download Pdf Here
Question: What are the passing marks in CBSE Class 12th exams?
Students must score at least 33 per cent marks per subject in order to pass the CBSE Class 12 exams.
Question: Where can I get the solution of topics given in CBSE 12th Biology syllabus?
Students can access topic-wise solutions using the links available on this page.
Question: Is NCERT book enough to prepare for the exams?
Yes, NCERT books are enough to prepare for the exams and cover CBSE class 12 Biology syllabus 2022-23.
Question: Is this CBSE 12th syllabus 2022-23 latest?
Yes, this syllabus is the latest syllabus, as released by CBSE after reduction.
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