eVidyarthi

Main Menu
  • eVidyarthi
  • School
    • Class 6th
      • Mathematics
      • Hindi
      • English Grammar
      • व्याकरण
    • Class 7th
      • Mathematics
      • Hindi
      • English Grammar
      • व्याकरण
    • Class 8th
      • Mathematics 8
      • Hindi
      • English Grammar
      • व्याकरण
    • Class 9th
      • Mathematics 9
      • English
      • English Grammar
      • व्याकरण
      • Science
      • Economics
      • Geography
      • Civics
      • History
    • Class 10th
      • Mathematics 10
      • English Class 10
      • English Grammar
      • व्याकरण
      • Science
      • Economics
      • Geography
      • Civics
      • History
    • Class 11th
      • Mathematics 11
      • Accounts
      • English Grammar
      • व्याकरण
      • Chemistry
      • Physics
      • Biology
    • Class 12th
      • Mathematics 12
      • Accountancy
      • English Grammar
      • व्याकरण
      • Chemistry
      • Physics
      • Biology
    • Close
  • English
    • Basic English Grammar
    • Basic English Speaking
    • English Vocabulary
    • English Idioms & Phrases
    • Personality Enhancement
    • Interview Skills
    • Close
  • Softwares
    • Microsoft Word
    • PhotoShop
    • Excel
    • Illustrator
    • PowerPoint
    • Close
  • French
  • German
  • Contact Us
Class 12th Biology || Menu
  • Important
    • Previous Year Papers
    • Sample Papers
    • MCQs
    • Revision Notes
    • Biology Book
    • Biology Syllabus
    • Marking Scheme
    • Weightage
    • Close
  • Reproduction in Organisms
    • Asexual Reproduction
    • Sexual Reproduction
    • NCERT Solutions
    • Close
  • Sexual Reproduction in Flowering Plants
    • Prefertilisation: Structures and Events
    • Pollination
    • Double Fertilisation, Post Fertilisation: Structures and Events
    • NCERT Solutions
    • Close
  • Human Reproduction
    • Male and Female Reproductive System
    • Gametogenesis and Menstrual Cycle
    • Fertilisation, Embryonic Development and Parturition
    • NCERT Solutions
    • Close
  • Reproductive Health
    • Population Explosion and Birth Control
    • Sexually Transmitted Diseases, Infertility
    • NCERT Solutions
    • Close
  • Principles of Inheritance and Variation
    • Mendel’s Laws of Inheritance
    • Chromosomal Theory of Inheritance, Linkage and Recombination, Sex Determination
    • Mutation and Genetic Disorders
    • NCERT Solutions
    • Close
  • Molecular Basis of Inheritance
    • DNA, RNA and Experiments on Genetic Material
    • Replication
    • Translation and Regulation of Gene Expression
    • Human Genome Project and DNA Fingerprinting
    • Transcription, Genetic Code and Types of RNA
    • NCERT Solutions
    • Close
  • Evolution
    • Origin of Life
    • Theories of Evolution
    • Mechanism of Evolution
    • Palaeontology and Human Evolution
    • NCERT Solutions
    • Close
  • Human Health and Disease
    • Diseases in Humans and Immunity
    • AIDS and Cancer
    • Alcohol and Drug abuse
    • NCERT Solutions
    • Close
  • Strategies for Enhancement in Food Production
    • Animal Husbandry
    • Plant Breeding
    • Single Cell Protein and Tissue Culture
    • NCERT Solutions
    • Close
  • Microbes in Human Welfare
    • Microbes: Household Products, Industrial Products and Sewage Treatment
    • Microbes: Biogas, Biocontrol Agents and Biofertilisers
    • NCERT Solutions
    • Close
  • Biotechnology : Principles and Processes
    • Tools of Recombinant DNA Technology
    • Processes of Recombinant DNA Technology
    • Close
  • Biotechnology and its Applications
    • Biotechnological Applications in Agriculture and Medicine
    • Transgenic Organisms and Ethical Issues in Biotechnology
    • NCERT Solutions
    • Close
  • Organisms and Populations
    • Organism and its Environment
    • Population: Attributes and Growth
    • Population Interactions
    • NCERT Solutions
    • Close
  • Ecosystem
    • Structure and Requirements of Ecosystem
    • Energy Flow and Ecological Pyramids
    • NCERT Solutions
    • Close
  • Biodiversity and Conservation
    • Biodiversity and its Importance
    • Conservation of Biodiversity
    • NCERT Solutions
    • Close
  • Environmental Issues
    • Air and Water Pollution and their Control
    • Solid wastes, Agrochemicals and Radioactive wastes
    • Greenhouse Effect, Ozone Depletion and Deforestation
    • NCERT Solutions
    • Close

CBSE Class 12th Biology, NCERT Solutions, Sample & Previous Year Papers

  • Important
    • Previous Year Papers
    • Sample Papers
    • Marking Scheme
    • Biology Syllabus
    • Weightage
  • Reproduction in Organisms
    • Asexual Reproduction
    • Sexual Reproduction
    • NCERT Solutions
  • Sexual Reproduction in Flowering Plants
    • Prefertilisation: Structures and Events
    • Pollination
    • Double Fertilisation, Post Fertilisation: Structures and Events
    • NCERT Solutions
  • Human Reproduction
    • Male and Female Reproductive System
    • Gametogenesis and Menstrual Cycle
    • Fertilisation, Embryonic Development and Parturition
    • NCERT Solutions
  • Reproductive Health
    • Population Explosion and Birth Control
    • Sexually Transmitted Diseases, Infertility
    • NCERT Solutions
  • Principles of Inheritance and Variation
    • Mendel’s Laws of Inheritance
    • Chromosomal Theory of Inheritance, Linkage and Recombination, Sex Determination
    • Mutation and Genetic Disorders
    • NCERT Solutions
  • Molecular Basis of Inheritance
    • DNA, RNA and Experiments on Genetic Material
    • Replication
    • Translation and Regulation of Gene Expression
    • Human Genome Project and DNA Fingerprinting
    • Transcription, Genetic Code and Types of RNA
    • NCERT Solutions
  • Evolution
    • Origin of Life
    • Theories of Evolution
    • Mechanism of Evolution
    • Palaeontology and Human Evolution
    • NCERT Solutions
  • Human Health and Disease
    • Diseases in Humans and Immunity
    • AIDS and Cancer
    • Alcohol and Drug abuse
    • NCERT Solutions
  • Strategies for Enhancement in Food Production
    • Animal Husbandry
    • Plant Breeding
    • Single Cell Protein and Tissue Culture
    • NCERT Solutions
  • Microbes in Human Welfare
    • Microbes: Household Products, Industrial Products and Sewage Treatment
    • Microbes: Biogas, Biocontrol Agents and Biofertilisers
    • NCERT Solutions
  • Biotechnology : Principles and Processes
    • Tools of Recombinant DNA Technology
    • Processes of Recombinant DNA Technology
  • Biotechnology and its Applications
    • Biotechnological Applications in Agriculture and Medicine
    • Transgenic Organisms and Ethical Issues in Biotechnology
    • NCERT Solutions
  • Organisms and Populations
    • Organism and its Environment
    • Population: Attributes and Growth
    • Population Interactions
    • NCERT Solutions
  • Ecosystem
    • Structure and Requirements of Ecosystem
    • Energy Flow and Ecological Pyramids
    • NCERT Solutions
  • Biodiversity and Conservation
    • Biodiversity and its Importance
    • Conservation of Biodiversity
    • NCERT Solutions
  • Environmental Issues
    • Air and Water Pollution and their Control
    • Solid wastes, Agrochemicals and Radioactive wastes
    • Greenhouse Effect, Ozone Depletion and Deforestation
    • NCERT Solutions

CBSE Class XII, Biology Book

NCERT Book for Class 12 Biology    Chapter 1 – Reproduction in organisms  Chapter 2 – Sexual Reproduction in Flowering Plants  Chapter 3 – Human Reproduction  Chapter 4 – Reproductive Health  Chapter 5 – Principles of Inheritance and Variation  Chapter 6 – Molecular Basis of Inheritance  Chapter 7 – Evolution  Chapter 8 – Human Health […]

Copyright © 2019 eVidyarthi and its licensors. All rights reserved.

Biology Notes for Class 12 – All Chapters

Chapter 1 Reproduction in Organism Class 12 Notes Chapter 2 Sexual Reproduction in Flowering Plants Class 12 Notes Chapter 3 Human Reproduction Class 12 Notes Chapter 4 Reproductive Health Class 12 Notes Chapter 5 Principles of Inheritance and Variation Class 12 Notes Chapter 6 Molecular Basis of Inheritance Class 12 Notes Chapter 7 Evolution Class 12 Notes Chapter 8 Human Health and Disease […]

Copyright © 2019 eVidyarthi and its licensors. All rights reserved.

Environmental Issues Class 12 Biology Chapter 16 Notes

Pollution, Solid and Radioactive Wastes: 1. Pollution is an undesirable change’in the physical, chemical and biological characteristics of air, water, land and soil. (i) Pollutants are agents that cause undesirable change in the environment. (ii) The Government of India has passed the Environment Protection Act, 1986 to protect and improve the quality of our environment (air, […]

Copyright © 2019 eVidyarthi and its licensors. All rights reserved.

Biodiversity and Conservation Class 12 Biology Chapter 15 Notes

Biodiversity: 1. Biodiversity can be defined as the occurrence of different types of genes, gene pools, species, habitats and ecosystem in a given region. (i) The term biodiversity was given by a socio biologist Edward Wilson to describe the combined diversity at all the levels of biological organisation. (ii) There are more than 20,000 species of […]

Copyright © 2019 eVidyarthi and its licensors. All rights reserved.

Ecosystem Class 12 Biology Chapter 14 Notes

Ecosystem—Structure and Function,- Productivity and Decomposition: 1. An ecosystem is a functional unit of nature, where living organisms interact among themselves and also with the surrounding physical environment. The word ‘Ecosystem’ was coined by Sir AG Tansley (1935). 2. The size of an ecosystem varies greatly from a small pond to a large forest or a sea. […]

Copyright © 2019 eVidyarthi and its licensors. All rights reserved.

Organisms and Populations Class 12 Biology Chapter 13 Notes

Organisms and Its Environment: 1. Ecology is the branch of biology, which studies the interactions among organisms and their physical (abiotic) environment. 2. The subject ecology is basically concerned with four levels of biological organisation. These are given below: (i) Organism Living component of the environment at individual level and is basic unit of ecological hierarchy. (ii) […]

Copyright © 2019 eVidyarthi and its licensors. All rights reserved.

Biotechnology and Its Applications Class 12 Biology Chapter 12 Notes

Biotechnological Applications in Agriculture and Medicine: 1. Biotechnology essentially deals with industrial scale production of biopharmaceuticals and biologicals. The applications of biotechnology include therapeutics, diagnostics, genetically modified crops for agriculture, processed food, bioremediation, waste treatment and energy production. 2. Biotechnology have the following three critical research areas: (i) To provide the best catalyst in the form of […]

Copyright © 2019 eVidyarthi and its licensors. All rights reserved.

Biotechnology: Principles and Processes Class 12 Biology Chapter 11 Notes

Principles of Biotechnology and Tools of Recombination DNA Technology: 1. Biotechnology can be defined as the use of microorganisms, plants or animal cells or their components to produce products and processes useful to humans. According to the European Federation of Biotechnology (EFB), biotechnology is the integration of natural science and organisms, cells, parts thereof and molecular […]

Copyright © 2019 eVidyarthi and its licensors. All rights reserved.

Microbes in Human Welfare Class 12 Biology Chapter 10 Notes

Microbes in Household Products, Industrial Products and in Sewage Treatment: 1. Microbes are the major components of biological systems on the earth. They are present everywhere, i.e. in soil, water, air, inside our bodies and those of other animals and plants. They can also be found deep inside the geysers (thermal vents), deep in soil, under […]

Copyright © 2019 eVidyarthi and its licensors. All rights reserved.

Strategies Enhancement in Food Production Class 12 Biology Chapter 9 Notes

Animal Husbandry: 1. Animal husbandry is the agricultural practice of breeding and raising livestock. It deals with the care and breeding of livestock like buffaloes, cows, pigs, horses, cattle, sheep, goat, etc. It also includes poultry farming and fisheries. More than 70% of the world’s livestock population is in India and China. Many new technologies have […]

Copyright © 2019 eVidyarthi and its licensors. All rights reserved.

Human Health and Disease Class 12 Biology Chapter 8 Notes

Health, Common Diseases in Human and Immunity: 1. Health is defined as a state of complete physical, mental and social well-being. (i) The factors which affect human health are: (a) Genetic disorders (b) Infections (c) Lifestyle. (ii) Balanced diet, personal hygiene and regular exercise are very important to maintain good health. (Hi) Awareness about diseases and […]

Copyright © 2019 eVidyarthi and its licensors. All rights reserved.

Evolution Class 12 Biology Chapter 7 Notes

The Origin of Life and Evidences of Evolution: 1. The study of history of life forms on earth is called evolutionary biology. 2. Evolution is a process that results in heritable changes in population spread over many generations leading to diversity of organisms on earth. 3. Origin of life is considered a unique event in the history of […]

Copyright © 2019 eVidyarthi and its licensors. All rights reserved.

Molecular Basis of Inheritance Class 12 Biology Chapter 6 Notes

The DNA and RNA World: 1. Over the years after Mendel, the nature of the genetic material was investigated, resulting in the realisation that DNA is the genetic material in majority of organisms. 2. Deoxyribonucleic acid (DNA) and Ribonucleic acid (RNA) are the two types of nucleic acid found in living systems. Nucleic acids are polymers of nucleotides. […]

Copyright © 2019 eVidyarthi and its licensors. All rights reserved.

Principles of Inheritance and Variation Class 12 Biology Chapter 5 Notes

Mendel’s Laws of Inheritance: 1. Genetics is the branch of biology, which deals with inheritance and variation of characters from parents to offspring. 2. Inheritance is the process by which characters or traits are transferred from one generation to the next. 3. Variation is the degree by which progeny differs from each other and with their parents. Humans […]

Copyright © 2019 eVidyarthi and its licensors. All rights reserved.

Reproductive Health Class 12 Biology Chapter 4 Notes

Reproductive Health Problems and Strategies: 1. Reproductive health simply refers to healthy reproductive organs with normal functions. According to the World Health Organisation (WHO), reproductive health means a total well-being in all aspects of reproduction, i.e. physical, emotional, behavioural and social. 2. The improved reproductive health of society requires following factors: (i) Better awareness about sex-related […]

Copyright © 2019 eVidyarthi and its licensors. All rights reserved.

Human Reproduction Class 12 Biology Chapter 3 Notes

1. Humans are sexually reproducing and viviparous organisms. There are remarkable differences between the reproductive events and systems in male and female. 2. Male reproductive system includes a pair of testes, accessory ducts, glands and the external genitalia. (i) Testes are located outside the abdominal cavity within a pouch called scrotum. Scrotum maintains the low temperature of […]

Copyright © 2019 eVidyarthi and its licensors. All rights reserved.

Sexual Reproduction in Flowering Plants Class 12 Biology Chapter 2 Notes

Sexual reproduction is the process of fusion of haploid gametes, resulting in the production of a diploid zygote, which ultimately develops into a new organism. All flowering plants show sexual reproduction. 1. Flowers are the site of sexual reproduction in flowering plants. (i) A flower has following parts arranged in four whorls, i.e. calyx (sepals), corolla […]

Copyright © 2019 eVidyarthi and its licensors. All rights reserved.

Reproduction in Organisms Class 12 Biology Chapter 1 Notes

Reproduction: 1. The period between birth and natural death of an organism is called its lifespan. It can vary from less than a day to more than 400 yrs. Whatever be the lifespan, death of every individual organism is a certainty, i. e. no individual is immortal, except single-celled organisms. Lifespan of some organisms are […]

Copyright © 2019 eVidyarthi and its licensors. All rights reserved.

  • 1
  • 2
  • 3
  • …
  • 5
  • Next Page »

Search On eVidyarthi

Evidyarthi on Facebook

Like us on Facebook

Follow Evidyarthi on Youtube

Learn English
Learn English Through हिन्दी
Job Interview Skills
English Grammar
हिंदी व्याकरण - Vyakaran
Mathematics Class 6th
हिन्दी Class 6th
Mathematics Class 7th
हिन्दी Class 7th
हिन्दी Class 8th
Mathematics Class 8th
Mathematics Class 9th
English Class 9th
Science Class 9th
Mathematics Class 10th
English Class 10th
Mathematics Class XI
Chemistry Class XI
Accountancy Class 11th
Accountancy Class 12th
Mathematics Class 12th
Microsoft Word
Microsoft Excel
Microsoft PowerPoint
Adobe PhotoShop
Adobe Illustrator
Learn German
Learn French
IIT JEE
Copyright © 2019 eVidyarthi and its licensors. All rights reserved.