Bihar Board Class 12 Biology Syllabus

Unitइकाई का नामWeightage
Unit 1: Sexual Reproductionइकाई 1: लैंगिक जनन06
Unit 2: Genetics and evolutionइकाई 2: आनुवंशिकी तथा विकास18
Unit 3: Biology & human welfareइकाई 3: जीव विज्ञान एवं मानव कल्याण18
Unit 4: Biotechnology and its applicationsइकाई 4: जैव प्रद्योगिकी एवं इसका उपयोग18
Unit 5: Ecology and environmentइकाई 5: परिस्थितिकी तथा पर्यावरण10
Totalयोग अंक70



Unit 1: Sexual Reproduction

  • Pollination and fertilization in flowering plants.
  • Development of seed and fruit
  • Human Reproduction: Reproductive system in male and females, menstrual cycle, production of gametes. Fertilization, implantation, embryo development, pregnancy and parturition.
  • Reproductive health-birth control, contraception and sexually transmitted diseases.

Unit 2: Genetics and evolution

  • Mendelian Inheritance
  • Chromosome theory of inheritance, Deviations from Mendelism ratio (Incomplete dominance, Codominance, Multiple alleles).
  • Sex determination in human beings: XX, XY
  • Linkage and crossing over
  • Inheritance pattern of haemophilia and blood groups in human beings.
  • DNA, replication, transcription, translation
  • Gene expression and regulation
  • Genome and Human Genome Project
  • DNA Fingerprinting
  • Evolution: Theories and evidences

Unit 3: Biology & human welfare

  • Animal Husbandry
  • Basic concepts of immunology, vaccines
  • Pathogens, parasites
  • Plant bleeding, tissue culture, food production
  • Microbes in household food processing, industrial production, Sewage treatment and energy generation
  • Cancer and AIDS
  • Adolescence and drug alcohol abuse

Unit 4: Biotechnology and its applications

  • Recombinant DNA technology
  • Applications in Health, Agriculture and Industry
  • Genetically modified (GM) organisms, Biosafety issues
  • Insulin and Bt.cotton

Unit 5: Ecology and environment

  • Organisms and Populations
  • Ecosystem
  • Biodiversity and its Conservation
  • Environmental Issues