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Class 12

Biology

60 lessons in 13 chapters, explained in plain words.

Sexual Reproduction in Flowering Plants

  1. The stamen and the pollen grain
  2. The pistil, ovule and embryo sac
  3. Pollination
  4. Pollen-pistil interaction and double fertilisation
  5. After fertilisation

Human Reproduction

  1. The male reproductive system
  2. The female reproductive system
  3. Gametogenesis
  4. The menstrual cycle
  5. Fertilisation, pregnancy and birth

Reproductive Health

  1. Reproductive health
  2. Population and birth control
  3. MTP and sexually transmitted infections
  4. Infertility and assisted reproduction

Principles of Inheritance and Variation

  1. Mendel and one gene
  2. Beyond simple dominance
  3. Two genes, chromosomes and linkage
  4. Many genes, one gene, and sex
  5. Mutation and genetic disorders

Molecular Basis of Inheritance

  1. The DNA
  2. Finding the genetic material
  3. Replication
  4. Transcription
  5. Genetic code and translation
  6. Gene regulation, genome and fingerprints

Evolution

  1. Origin of life and Darwin's idea
  2. Evidence for evolution
  3. Adaptive radiation
  4. How evolution works
  5. The story of life and of man

Human Health and Disease

  1. Health and common diseases
  2. Immunity and vaccines
  3. The immune system
  4. AIDS and cancer
  5. Drugs and alcohol abuse

Microbes in Human Welfare

  1. Microbes at home
  2. Microbes in industry
  3. Microbes and sewage
  4. Microbes and biogas
  5. Biocontrol and biofertilisers

Biotechnology: Principles and Processes

  1. What biotechnology is
  2. Restriction enzymes and gels
  3. Vectors and hosts
  4. Processes of recombinant DNA technology

Biotechnology and its Applications

  1. Tissue culture
  2. GM crops
  3. Biotechnology in medicine
  4. Transgenic animals and ethics

Organisms and Populations

  1. Population attributes
  2. Population growth
  3. Life history and predation
  4. Competition, parasitism and partnerships

Ecosystem

  1. Ecosystem structure and productivity
  2. Decomposition
  3. Energy flow
  4. Ecological pyramids

Biodiversity and Conservation

  1. What biodiversity is
  2. Patterns of biodiversity
  3. Loss of biodiversity
  4. Conserving biodiversity