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Class 12 Biology all chapters handwritten notes free pdf download 2023

Are you looking for Class 12 Biology handwritten notes pdf download 2023? If yes, then you‘ve come to the right place.

Class 12 Biology is an important subject for school and college students. It lays the foundation for further studies in the field of medicine and science. Having a good knowledge of the subject is essential to excel in these fields.

Handwritten notes are one of the best ways to learn and understand Class 12 Biology. They help you to understand the concepts better and grasp them quickly. Moreover, they also help you to remember the topics for a longer period of time.

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Index

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 and Disease
Chapter 9 Strategies for Enhancement in Food Production
Chapter 10 Microbes in Human Welfare
Chapter 11 Biotechnology: Principles and Processes
Chapter 12 Biotechnology and its Applications
Chapter 13 Organisms and Populations
Chapter 14 Ecosystem
Chapter 15 Biodiversity and Conservation
Chapter 16 Environmental Issues

 

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Description

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Class 12 Biology all chapters handwritten notes free pdf download 2023

Are you looking for Class 12 Biology handwritten notes pdf download 2023? If yes, then you‘ve come to the right place.

Class 12 Biology is an important subject for school and college students. It lays the foundation for further studies in the field of medicine and science. Having a good knowledge of the subject is essential to excel in these fields.

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To facilitate the learning process, we have compiled a list of all the Class 12 Biology handwritten notes pdf download 2023. These notes will help you to understand every chapter of the subject in detail. They cover topics like heredity, cell structure, genetics, human anatomy, and physiology.

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So, if you want to excel in Class 12 Biology, then these notes are the perfect solution. They will help you to understand the topics better and enhance your knowledge. So, what are you waiting for? Download these notes today and get started on your journey to success.

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This Product Contains Handwritten notes of given chapters

Unit-VI Reproduction

Chapter 1: Reproduction
1.1 Reproduction- A characteristic feature of all organisms for continuation of species

1.2 Modes of Reproduction – asexual and sexual reproduction

1.3 Asexual reproduction

1.3.1 Binary fission

1.3.2 Sporulation

1.3.3 Budding

1.3.4 Gemmule formation

1.3.5 Fragmentation

1.3.6 Vegetative propagation in plants

Chapter 2: Sexual Reproduction in Flowering Plants
2.1 Flower structure

2.2 Development of male and female gametophytes

2.3 Pollination

2.3.1 Types, agencies and examples

2.4 Outbreeding devices -Pollen-pistil interaction

2.4.1 Double fertilization

2.4.2 Post-fertilization events – development of endosperm and embryo

2.5 Development of seed and formation of fruit

2.6 Special modes-

2.6.1 Apomixis

2.6.2 Parthenocarpy

2.6.3 Polyembryony

2.7 Significance of seed dispersal and fruit formation.

Chapter-3: Human Reproduction
3.1 Male and female reproductive system

3.2 Microscopic anatomy of testis and ovary

3.3 Gametogenesis- spermatogenesis and oogenesis

3.4 Menstrual cycle

3.5 Fertilization

3.6 Embryo development

3.6.1 Blastocyst formation

3.6.2 Implantation

3.7 Pregnancy and placenta formation

3.8 Parturition

3.9 Lactation

Chapter-4: Reproductive Health
4.1 Need for reproductive health

4.2 Prevention of Sexually Transmitted Diseases (STDs)

4.3 Birth control – need and methods,

4.3.1 Contraception

4.3.2 Medical termination of pregnancy (MTP)

4.4 Amniocentesis

4.5 Infertility and assisted reproductive technologies – IVF, ZIFT, GIFT.

Unit VII: Genetics and Evolution
Chapter-5: Principles of Inheritance and Variation
5.1 Heredity and variation

5.1.1 Mendelian inheritance

5.2 Deviations from Mendelism

5.2.1 Incomplete dominance

5.2.2 Codominance and multiple alleles and inheritance of blood groups

5.2.3 Pleiotropy

5.3 Elementary idea of polygenic inheritance

5.4 Chromosome theory of inheritance

5.5 Chromosomes and genes

5.6 Sex determination – in human being, birds and honey bee

5.7 Linkage and crossing over

5.8 Sex-linked inheritance

5.8.1 Haemophilia

5.8.2 Colour blindness

5.9 Mendelian disorders in humans -thalassemia

5.10 Chromosomal disorders in humans

5.11 Down’s syndrome

5.12 Turner’s syndromes

5.13 Klinefelter’s syndrome

Chapter-6: Molecular Basis of Inheritance
6.1 Search for genetic material and DNA as genetic material

6.2 Structure of DNA

6.2.1 Structure of RNA

6.3 DNA packaging

6.4 DNA replication

6.5 Central Dogma

6.6 Transcription

6.6.1 Genetic code

6.6.2 Translation

6.7 Gene expression and regulation.

6.7.1 Lac operon

6.8.Genome

6.8.1.Human genome project

6.8.2.Rice genome project

6.9.DNA fingerprinting

Chapter-7: Evolution

7.1 Origin of life

7.2 Biological evolution and Evidence for biological evolution

7.2.1 Paleontology

7.2.2 Comparative anatomy

7.2.3 Embryology

7.2.4 Molecular evidence

7.3 Darwin’s contribution

7.3.1 Modern synthetic theory of evolution

7.4 Mechanism of evolution – variation (mutation and recombination) natural selection with examples

7.5 Types of natural selection

7.6 Gene flow and genetic drift

7.7 Hardy – Weinberg’s principle

7.8 Adaptive radiation

7.9 Human evolution

Unit VIII: Biology and Human Welfare
Chapter-8: Human Health and Diseases
8.1 Pathogens

8.2 Parasites causing human diseases

8.2.1 Malaria

8.2.2 Dengue

8.2.3 Chikungunya

8.2.4 Filariasis

8.2.5 Ascariasis

8.2.6 Typhoid

8.2.7 Pneumonia

8.2.8 Common cold

8.2.9 Amoebiasis

8.2.10 Ringworm

8.3 Basic concepts of immunology

8.3.1 Vaccines

8.3.2 Cancer

8.3.3 HIV and AIDS

8.4 Adolescence – Drug and Alcohol Abuse.

Chapter-9: Strategies for Enhancement in Food Production
9.1 Animal husbandry

9.2 Plant breeding

9.3 Tissue culture

9.4 Single-cell protein.

Chapter-10: Microbes in Human Welfare
10.1 Microbes in food processing

10.2 Industrial production

10.3 Sewage treatment

10.4 Energy generation

10.5 Microbes as biocontrol agents

10.6 Bio-fertilizers

10.7 Antibiotics production and judicious use

Unit IX: Biotechnology and its Applications
Chapter-11: Biotechnology – Principles and Processes
11.1 Genetic Engineering

11.2 Recombinant DNA Technology

Chapter-12: Biotechnology and its Application
12.1 Application of biotechnology in health and agriculture

12.1.1 Human insulin

12.1.2 Vaccine production

12.2 Stem cell technology

12.2.1 Gene therapy

12.3 Genetically modified organisms

12.3.1 Bt crops

12.3.2 Transgenic Animals

12.3.3 Biosafety issues

12.3.4 Biopiracy and patents

Unit X: Ecology and Environment
Chapter-13: Organisms and Populations
13.1 Organisms and environment

13.1.1 Habitat and niche

13.1.2 Population

13.1.3 Ecological adaptations

13.2 Population interactions

13.2.1 Mutualism

13.2.2 Competition

13.2.3 Predation

13.2.4 Parasitism

13.3 Population attributes

13.3.1 Growth

13.3.2 Birth rate and death rate

13.3.3 Age distribution

Chapter-14: Ecosystem
14.1 Ecosystems: Patterns and components

14.2 Productivity and decomposition

14.3 Energy flow

14.4 Pyramids of number

14.4.1 Biomass

14.4.2 Energy

14.5 Nutrient cycles

14.5.1 Carbon

14.5.2 Phosphorous

14.6 Ecological succession

14.7 Ecological services

14.7.1 Carbon fixation

14.7.2 Pollination

14.7.3 Seed dispersal

14.7.4 Oxygen release

Chapter-15: Biodiversity and its Conservation
15.1 Biodiversity – Concept, patterns, importance

15.2 Loss of biodiversity

15.3 Biodiversity conservation

15.3.1 Hotspots

15.3.2 Endangered organisms

15.3.3 Extinction

15.3.4 Red Data Book

15.3.5 Sacred Groves

15.3.6 Biosphere reserves

15.3.7 National parks

15.3.8 Wildlife

15.3.9 Sanctuaries

15.3.10 Ramsar sites.

Chapter-16: Environmental Issues
16.1 Air pollution and its control

16.2 Water pollution and its control

16.3 Agrochemicals and their effects

16.4 Solid waste management

16.5 Radioactive waste management

16.6 Greenhouse effect

16.7 Climate change

16.8 Impact and mitigation

16.9 Ozone layer depletion

16.10 Deforestation

16.11 Case study exemplifying success

16.12 Story addressing the environmental issue(s)

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