Syllabus : CBSE Syllabus of Biology for Class 12 For March
Class XII BIOLOGY
Time: 3 Hours
Marks : 70
1. Sexual reproduction 12
2. Genetics and evolution 20
3. Biology and human Welfare 12
4. Biotechnology and its applications 12
5. Ecology and environment 14
I SEXUAL REPRODUCTION (35 Periods)
Pollination and fertilization in flowering plants. Development of seeds
Human reproduction: reproductive system in male and female, menstrual cycle.
Production of gametes, fertilization, implantation, ,embryo development,
pregnancy and parturation. Reproductive health - birth control, contraception
and sexually transmitted diseases.
II GENETICS AND EVOLUTION (45 Periods)
Mendelian inheritance. Chromosome theory of inheritance, deviations from
Mendelian ratio (gene interaction- Incomplete dominance, co-dominance,
complementary genes, 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.
III BIOLOGY AND HUMAN WELFARE (35 Periods)
Basic concepts of immunology, vaccines.
Plant breeding, tissue culture, food
Microbes in household food processing,
industrial production, sewage treatment and energy generation.
Cancer and AIDS.
Adolescence and drug/alcohol abuse.
IV BIOTECHNOLOGY AND ITS APPLICATIONS (30 Periods)
Recombinant DNA technology.
Applications in Health, Agriculture and
Genetically modified (GM) organisms;
Insulin and Bt cotton
V ECOLOGY & ENVIRONMENT (35 Periods)
Ecosystems: components, types and energy
Species, population and community.
Centres of diversity and conservation of
biodiversity, National parks and sanctuaries.
(Class 12th) Other Syllabus :-