The Rajasthan Board of School Education (RBSE), also known as the Rajasthan Board, has released the 2025 Class 12 Biology syllabus. The PDF can be found on the RBSE's official website. As per the new updates on the official page, the board is planning to follow the previous year’s syllabus for the new session without introducing any changes, as the major changes were already introduced in the 2025 syllabus.
To get the complete RBSE Class 12 Biology syllabus (2025-26) and other details, read this article.
DownloadRBSE Class 12th Biology Syllabus 2025-26 here
RBSE Class 12 Biology Examination Scheme
The Rajasthan Board 12th Biology syllabus for the 2025 board exams will follow the below mentioned exam scheme. The theory will be of 70 marks and the rest 30 marks will be for the practicals. Check the complete information here.
Question Paper | Time (Hrs.) | Marks for the Paper | Sessional | Total Marks |
Theory | 3:15 | 56 | 14 | 70 |
Practical | 3:00 | 30 | 0 | 30 |
RBSE Class 12 Biology Syllabus 2025-26
Chapter 1 Sexual Reproduction in Flowering Plants
The flower- an attractive part of angiosperm pre-fertilization structures and phenomena: stamens, microfibrils and pollinators, pistil, neoplasms and embryos, pollination, double fertilization, fertilization, post-formations and events, embryos, embryos, seeds , apomixis and polyembryony.
Chapter 2 Human Reproduction
The Male Reproductive System, The Female Reproductive System, Gametogenesis, Menstrual Cycle, Fertilisation and Implantation, Pregnancy and Embryonic Development, Parturition and Lactation.
Chapter 3 Reproductive Health
Reproductive health–problems and strategies, population stabilisation and birth control, medical termination of pregnancy, sexually transmitted diseases, infertility.
Chapter 4 Principles of Inheritance and Variation
Mendel’s Laws of inheritance, inheritance of one gene: law of dominance, law of segregation, co-dominance, inheritance of two genes: law of independent assortment, chromosomal theory of inheritance, linkage and recombination, polygenic inheritance, pleiotropy, sex determination: sex determination in honey bee and humans, mutation, genetic disorders: pedigree analysis, mendelian disorders-colour blindness, haemophilia, sickle-cell anaemia, phenylketonuria, thalassemia, chromosomal disorders.
Chapter 5 Molecular Basis Of Inheritance
The DNA, the search for genetic material, the world, replication, transcription, genetic code, translation, regulation of gene expression, human genome project, dna fingerprinting.
Chapter 6 Evolution
Origin of life, evolution of life forms – a theory, what are the evidences for evolution?, what is adaptive radiation, biological evolution, mechanism of evolution, hardy – weinberg principle, a brief account of evolution, origin and evolution of man.
Chapter 7 Human Health and Disease
Common Diseases in Humans- Bacterial borne, Virus borne, fungal borne, protozoan and worm borne, Immunity - Innate Immunity, Acquired Immunity, Active and Passive Immunity, vaccination and Immunization, Allergies, Auto Immunity, Immune System in The Body, AIDS, CANCER, Drugs and Alcohol Abuse.
Chapter 8 Microbes in Human Welfare
Microbes in household products, microbes in industrial products, microbes in sewage treatment, microbes in production of biogas, microbes as biocontrol agents, microbes as biofertilisers.
Chapter 9 Biotechnology: Principles and Processes
Principles of biotechnology-genetic engineering, bioprocess engineering , tools of recombinant dna technology-restriction enzymes, cloning vectors, competent host (for transformation with recombinant DNA), processes of recombinant DNA technology-isolation of the genetic material (DNA), cutting of DNA at specific locations, amplification of gene of interest using pcr, insertion of recombinant dna into the host cell/organism, obtaining the foreign gene product, downstream processing.
Chapter 10 Biotechnology and its Applications
Biotechnological applications in agriculture, biotechnological applications in medicine-genetically engineered insulin, gene therapy, molecular diagnosis, transgenic animals, ethical issues.
Chapter 11 Organisms and Population
Populations, population attributes, population growth, life history variation, population interactions.
Chapter 12 Ecosystem
Ecosystem–structure and function, productivity, decomposition, energy flow, ecological pyramids.
Chapter 13 Biodiversity and Conservation
Biodiversity: patterns of biodiversity, loss of biodiversity, biodiversity conservation.
