Check Revised Course and Exam Syllabus

CBSE Class 12 Biology Syllabus 2022-23 can be downloaded in PDF format in the article below. Check out the program here and note the important topics to study.

Check out the CBSE Class 12 Biology Syllabus 2022-23 in the article here. The CBSE Board has released the new CBSE 12th Bio syllabus on the official website Class 12 students should know that this year there would be no splitting of their CBSE curriculum into Term 1 or 2. So this time sticking to the curriculum is even more important than ever. Check out the revised grading scheme and detailed syllabus below. Also download the CBSE Class 12 Biology Syllabus 2022-23 in PDF format via the link given at the end of this article.

CBSE Class 12 English Syllabus 2022-23 PDF: Check Revised Course and New Exam Syllabus

CBSE Class 12 Biology Syllabus 2022-23: Revised Exam Syllabus and Course

Consult the complete program below as well as the new exam scheme.





the reproduction



Genetics and Evolution



Biology and human well-being



Biotechnology and its applications



Ecology and Environment


Detailed syllabus:

Reproduction of Unit VI

Chapter 2: Sexual reproduction in flowering plants

Floral structure; development of male and female gametophytes; pollination – types, agents and examples; our breeding devices; pollen-pistil interaction; double fertilization; post-fertilization events – endosperm and embryo development, seed development and fruit formation; special modes – apomixis, parthenocarpy, polyembryony; Importance of seed dispersal and fruit formation.

Chapter 3: Human Reproduction

Male and female reproductive systems; microscopic anatomy of the testicles and ovaries; gametogenesis-spermatogenesis and oogenesis; menstrual cycle; fertilization, development of the embryo until the formation of the blastocyst, implantation; pregnancy and formation of the placenta (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

Inheritance 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 bees; linking and crossing; gender-linked inheritance – hemophilia, color blindness; Mendelian disorders in humans – thalassemia; chromosomal disorders in humans; Down syndrome, Turner and Klinefelter 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; expression and regulation of genes – lac operon; Genome, human genome and rice projects; Genetic imprint.

Chapter 7: Evolution

Origin of life; biological evolution and evidence of biological evolution (paleontology, comparative anatomy, embryology and molecular evidence); the contribution of Darwin, 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 Well-Being

Chapter 8: Human Health and Diseases

Pathogens ; parasites responsible for human diseases (malaria, dengue fever, chikungunya, filariasis, ascariasis, typhoid, pneumonia, colds, amoebiasis, ringworm) and their control; Basic concepts of immunology – vaccines; cancer, HIV and AIDS; Adolescence – drug and alcohol abuse.

Chapter 10: Microbes in Human Well-Being

Microbes in food processing, industrial production, wastewater treatment, energy production and microbes as biological control agents and biological fertilizers. antibiotics; judicious production and use.

Unit-IX Biotechnology and its applications

Chapter 11: Biotechnology – Principles and process

Genetic engineering (recombinant DNA technology).

Chapter 12: Biotechnology and its applications

Application of biotechnology to health and agriculture: production of human insulin and vaccines, 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

Interactions between populations – mutualism, competition, predation, parasitism; population attributes – growth, birth rate and death rate, age distribution. (Topics excluded: Organism and its environment, Major abiotic factors, Responses to abiotic factors, Adaptations)

Chapter 14: Ecosystem

Ecosystems: Models, components; productivity and decomposition; Energy flow; pyramids of numbers, biomass, energy (Excluded topics: ecological succession and nutrient cycles)

Chapter 15: Biodiversity and its conservation

Biodiversity-Concept, models, importance; biodiversity loss; biodiversity conservation; hotspots, endangered organisms, extinction, Red Data Book, Sacred Groves, biosphere reserves, national parks, wildlife, sanctuaries and Ramsar sites.

Check and Download PDF of CBSE Class 12 Bio Syllabus 2022-23 via the link here.

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