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Class 12
Biology
60 lessons in 13 chapters, explained in plain words.
Sexual Reproduction in Flowering Plants
The stamen and the pollen grain
The pistil, ovule and embryo sac
Pollination
Pollen-pistil interaction and double fertilisation
After fertilisation
Human Reproduction
The male reproductive system
The female reproductive system
Gametogenesis
The menstrual cycle
Fertilisation, pregnancy and birth
Reproductive Health
Reproductive health
Population and birth control
MTP and sexually transmitted infections
Infertility and assisted reproduction
Principles of Inheritance and Variation
Mendel and one gene
Beyond simple dominance
Two genes, chromosomes and linkage
Many genes, one gene, and sex
Mutation and genetic disorders
Molecular Basis of Inheritance
The DNA
Finding the genetic material
Replication
Transcription
Genetic code and translation
Gene regulation, genome and fingerprints
Evolution
Origin of life and Darwin's idea
Evidence for evolution
Adaptive radiation
How evolution works
The story of life and of man
Human Health and Disease
Health and common diseases
Immunity and vaccines
The immune system
AIDS and cancer
Drugs and alcohol abuse
Microbes in Human Welfare
Microbes at home
Microbes in industry
Microbes and sewage
Microbes and biogas
Biocontrol and biofertilisers
Biotechnology: Principles and Processes
What biotechnology is
Restriction enzymes and gels
Vectors and hosts
Processes of recombinant DNA technology
Biotechnology and its Applications
Tissue culture
GM crops
Biotechnology in medicine
Transgenic animals and ethics
Organisms and Populations
Population attributes
Population growth
Life history and predation
Competition, parasitism and partnerships
Ecosystem
Ecosystem structure and productivity
Decomposition
Energy flow
Ecological pyramids
Biodiversity and Conservation
What biodiversity is
Patterns of biodiversity
Loss of biodiversity
Conserving biodiversity