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Biology

CBSE Board - 12th Class

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Biology 12th is one of the scoring subjects having a lot of amazing facts in it. Apart from being an essential subject in the science group, one can score good marks in Biology 12th. This would help them to get placed in good medical institutions.

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Biology 12 syllabus for 2021-22

Biology 12 syllabus for the academic year 2021-22 contains five units in total - units 6, 7, 8, 9, and 10. Unit 6 is the chapter on reproduction. The number of periods allotted to it is 30, and the total marks carried by this unit are 14. Unit 7 contains the chapter on genetics and evolution. The marks credited to this unit are 18, and the periods allotted to these particular titles are 40 as per as CBSE syllabus for class 12 biology. Biology and Human welfare is the title of unit 8. The curriculum has provided 30 periods for this unit. The number allotted to the section is 14, according to the CBSE class 12 biology syllabus. Unit 9 contains a chapter about biotechnology and its applications. The total number of periods allotted for this unit is 30, and the marks provided for these titles are 10. The last unit or unit 10 is based on ecology and environment. This unit contains 14 marks and has been allotted 30 periods in total. Summing up every unit from the Biology Class 12 syllabus, the total number of periods is 160, and the total marks for the subject are 70.

CBSE Class 12 Biology Core Structure:

Unit VI: Reproduction
Chapter
02
Sexual Reproduction in Flowering Plants
Chapter
03
Human Reproduction
Unit VII: Genetics and Evolution
Chapter
05
Principles of Inheritance and Variation
Chapter
06
Molecular Basis of Inheritance
Unit VIII: Biology and Human Welfare
Chapter
08
Human Health and Diseases
Chapter
10
Microbes in Human Welfare
Unit IX. Biotechnology and Its Applications
Chapter
11
Biotechnology Principles and Processes
Chapter
12
Biotechnology and its Application
Chapter
13
Biodiversity and its Conservation
Unit VI: Reproduction
Chapter 02: Sexually Reproduction in Flowering Plants

In this chapter, students will get a piece of in-depth knowledge about flower structure in plants. The chapter also highlights the development of male and female reproductive parts. Students will also get to know about the different kinds of pollination. Apart from these, the chapter also highlights the significance of seed dispersal.

Chapter 03: Human Reproduction

The students in the chapter get to know about reproductive health and how to prevent sexually transmitted diseases. The chapter also discusses infertility and assisted reproductive technologies like IVF, GIFT, and ZIFT.

Unit VII: Genetics and Evolution
Chapter 05: Principles of Inheritance & Variation

The chapter talks about inheritance and variation in human beings. Students also get to know about sex determination in human beings, birds, etc.

Chapter 06: Molecular Basis of Inheritance

The chapter discusses genetic material and DNA. Students also get a clear concept of the structure of DNA and RNA. Apart from this, the chapter also discusses DNA packaging, DNA replication, and central dogma.

Unit VIII: Biology and Human Welfare
Chapter 08: Human Health & Diseases

Students, upon reading this chapter, get to know about pathogens and parasites that cause human disease. The chapter also provides solutions to prevent the disease from parasites. Apart from these, the chapter also explains the basic concept of Immunology in the 12th Biology syllabus.

Chapter 10: Microbes in Human Welfare

The chapter highlights microbes in human welfare that are microbes in food processing, sewage treatment, and bio-fertilizer. The chapter briefly explains antibiotics and their reductions and usage.

Unit IX: Biotechnology and Its Application
Chapter 11: Biotechnology Principles & Processes

Genetic engineering (Recombinant DNA technology).

Chapter 12: Biotechnology and Its Applications

The chapter gave a brief explanation of biotechnology application in the health as well as the agricultural sector. One, upon reading the paper, gets an in-depth knowledge about insulin and vaccine production. Other concepts covered in the chapter are stem cell technology, gene therapy, and genetically modified organisms.

Chapter 13: Organisms and Populations

Organisms and environment: The topics covered in this chapter are habitat and niche population and ecological adoption. Students also know about various kinds of population interaction like mutualism, predation, population attributes, etc. Other concepts covered in the chapter are growth rate, birth rate, death rate, age distribution, etc.

Unit-V : Human Physiology
Chapter 15: Biodiversity and Its Conservation

Students get to know different concepts related to biodiversity and its conservation in this chapter. Topics included in the chapter include loss of diversity, biodiversity conservation, red data book, sacred groves, biosphere reserve, wildlife sanctuaries, Ramsar sites, etc.

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