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Biology. NCERT/CBSE class 12 Biology book Biology. content. NCERT/CBSE class 12 Biology book Biology. 01REPRODUCTION IN ORGANISMS. NCERT Class XII Biology Book is given below. Click Here for Class XII All NCERT Books NextNCERT Class XII Business Studies Book» Download NCERT Books for Class 12 Biology NCERT Books Online NCERT Books Online Free. Biology Textbook for Class XII is an NCERT textbook which follows the guidelines of NFC in letter and spirit. This book will help students of Class XII become.
Main Point to Ponder Chapter Reproduction in Organisms Reproduction, a characteristic feature of all organisms for continuation of species; modes of reproduction — asexual and sexual reproduction; asexual reproduction — binary fission, sporulation, budding, gemmule formation, fragmentation; vegetative propagation in plants. Chapter Sexual Reproduction in Flowering Plants Flower structure; development of male and female gametophytes; pollination — types, agencies and examples; outbreeding devices; pollen-pistil interaction; double fertilization; post fertilization events — development of endosperm and embryo, development of seed and formation of fruit; special modes-apomixis, parthenocarpy, polyembryony; Significance of seed dispersal and fruit formation. Chapter Human Reproduction Male and female reproductive systems; microscopic anatomy of testis and ovary; gametogenesis — spermatogenesis and oogenesis; menstrual cycle; fertilisation, embryo development upto blastocyst formation, implantation; pregnancy and placenta formation elementary idea ; parturition elementary idea ; lactation elementary idea. Chapter Human Health and Diseases Pathogens; parasites causing human diseases malaria, dengue, chickengunia, filariasis, ascariasis, typhoid, pneumonia, common cold, amoebiasis, ring worm and their control; Basic concepts of immunology — vaccines; cancer, HIV and AIDS; Adolescence — drug and alcohol abuse. Chapter Strategies for Enhancement in Food Production Improvement in food production: Plant breeding, tissue culture, single cell protein, Biofortification, Apiculture and Animal husbandry. Chapter Microbes in Human Welfare In household food processing, industrial production, sewage treatment, energy generation and microbes as biocontrol agents and biofertilizers. Antibiotics; production and judicious use.
Environmental Issues Air pollution and its control; water pollution and its control; agrochemicals and their effects; solid waste management; radioactive waste management; greenhouse effect and climate change; ozone layer depletion; deforestation; any one case study as success story addressing environmental issue s.
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Chapter 1: Reproduction in Organisms Chapter 2: Sexual Reproduction in Flowering Plants Chapter 3: Human Reproduction Chapter 4: Reproductive Health Chapter 5: Principle of Inheritance and Variation Chapter 6: Molecular Basis of Inheritance Chapter 7: Evolution Chapter 8: Human Health and Diseases Chapter 9: Strategies for Enhancement in Food Production Chapter Microbes in Human Welfare Chapter Principles and Processes Chapter Biotechnology and its Applications Chapter Organisms and Populations Chapter Ecosystem Chapter Biodiversity and Conservation Chapter This chapter, deals in depth study of principles and processes involved in biotechnology.
Among many techniques, modern biotechnology is the result of the following two core techniques.
They are- Genetic engineering Manufacturing of Antibiotics, Drugs and other Vaccines Class 12 Biology Chapter 12 Biotechnology and its Application In this chapter, students will learn that how human beings have used biotechnology to improve the quality of human life, especially in the field of food production and health. Biotechnology has given humans several useful products by using microbes, plants, animals, and their metabolic machinery.
Class 12 Biology Chapter 13 Organisms and Populations In this chapter, students shall explore ecology at organismic and population level. This chapter deals with topics such as organisms and its environment, niche, major abiotic factors affecting the organisms and its environment such as temperature, water, light, soil, responses to abiotic factors such as regulation , conformation, migration and suspension.
Diagrams, illustrations, flowcharts, and easy language makes this chapter comprehensive and easy to learn. Moreover, the sequential progress of the topics helps us retain and grasp better. Class 12 Biology Chapter 14 Ecosystem An ecosystem can be visualized as a functional unit of nature, where living organisms interact among themselves and also with the surrounding physical environment.
In this chapter student will first learn about structure of ecosystem,in order to appreciate the input productivity , transfer of energy food chain and the output. Class 12 Biology Chapter 15 Biodiversity and its Conservation In this chapter students will learn about importance and significance of biodiversity, its types, patterns, evolution, degradation, and conservation.
Genetic diversity, species diversity, latitudinal gradients, species area relationship, causes of biodiversity losses, in-situ conservation and ex-situ conservation are few topics covered in this chapter. Class 12 Biology Chapter 16 Environmental Issues This chapter deals with the problems that are posing a threat to the ecological balance in nature such as pollution, global warming, deforestation, etc.