CBSE Class 12 syllabus for Biology 2020-21: Check Revised 12th Biology Syllabus
Biology, undoubtedly, is an intriguing subject that not only captivates students with its fascinating concepts but also offers ample opportunities for scoring well in exams. Packed with amazing facts and exclusive discoveries, studying the CBSE Class 12 syllabus for Biology can be an enriching experience for students.
Biology holds immense significance in the science stream, as scoring well in this subject can greatly enhance students’ chances of securing admission into reputable medical institutions and other academic pathways.
However, achieving a high percentage in exams requires more than just studying from the class 12 textbook. Additional preparation and resources are often necessary to excel in this subject and attain a desirable score.
Download Class 12 Biology Syllabus PDF 2020-21
CBSE Class 12 Deleted Portion of Syllabus for 2020-2021
Check subject-wise details of the deducted portion of CBSE Class 9 syllabus from the following links:
CBSE class 12 Biology Notes: Chapter wise
| Biology Notes For CBSE Class 12 | |
| Chapter 1 – Reproduction in Organism (Complete chapter removed from syllabus for 2020-21 academic session) | |
| 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 (Complete chapter removed from syllabus for 2020-21 academic session) | |
| Chapter 8 – Human Health and Disease | |
| Chapter 9 – Strategies for Enhancement in Food Production (Complete chapter removed from syllabus for 2020-21 academic session) | |
| 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 (Complete chapter removed from syllabus for 2020-21 academic session) | |
| Chapter 15 – Biodiversity and Conservation | |
| Chapter 16 – Environmental Issues (Complete chapter removed from syllabus for 2020-21 academic session) |
Chapter 1 – Reproduction in Organisms
Reproduction is a fundamental biological process that ensures the continuity of species across generations. It occurs in all living organisms, from single-celled amoebas to complex multicellular beings like humans. Reproduction can take place through two modes, involving one or both parents.
Chapter 2 – Sexual Reproduction in Flowering Plants
Plants exhibit both sexual and asexual modes of reproduction. Most flowering plants reproduce sexually, involving the production of flowers. Flowers serve as the reproductive organs of plants and consist of various parts such as pedicel, sepals, petals, calyx, stamen (comprising the anther and filament), and pistil (comprising the stigma, style, and ovary).
Chapter 3 – Human Reproduction
In humans, reproduction is achieved through sexual reproduction, involving internal fertilization through sexual intercourse. It is the process of giving birth to offspring that inherit traits from their parents.
Chapter 4 – Reproductive Health
Reproductive health encompasses the normal and healthy functioning of all reproductive organs, covering various aspects related to reproduction.
Chapter 5 – Principles of Inheritance and Variation
Heredity is the transmission of traits or characteristics from parents to offspring through genes located on chromosomes. Genes carry instructions that can resemble those of one or both parents, and the principles of inheritance and variation govern these processes.
Chapter 6 – Molecular Basis of Inheritance
Deoxyribonucleic Acid (DNA) is the molecule responsible for carrying genetic information in all living organisms. It is a long polymer chain composed of deoxyribonucleotides, and its length varies depending on the number of nucleotide base pairs present in it.
Chapter 7 – Evolution
Evolution is the scientific study of the characteristics and changes in different forms of life over multiple generations. Biologists use this theory to examine genetic variation within populations.
Chapter 8 – Human Health and Disease
Health can be defined as a state of physical, mental, and social well-being, not just the absence of disease or illness, according to the World Health Organization (WHO).
Maintaining good health involves factors such as a balanced diet, regular exercise, personal hygiene, and awareness of different diseases and their effects, including genetic disorders, stress, infections from pathogens, and unhealthy food intake.
Chapter 9 – Strategies for Enhancement in Food Production
The issue of population explosion has necessitated the need for enhancing food production. To achieve this, various biological techniques and principles are being developed and implemented to address the challenges associated with increasing food demand.
Chapter 10 – Microbes in Human Welfare
Microbes, including algae, bacteria, fungi, protozoa, and viruses, play a significant role in biological systems on Earth. They are ubiquitous and found in soil, water, air, and even on our body and other animals and plants.
These microscopic organisms are essential in various aspects of human welfare and have diverse shapes and sizes, requiring the use of microscopes for their observation and study.
Chapter 11 – Biotechnology: Principles and Processes
Biotechnology is a field of biology that involves the use of living organisms and their components to develop, modify, and produce useful products for human welfare. The term “Biotechnology” was coined in 1919 by agricultural engineer Karoly Ereky, earning him the title of father of Biotechnology.
Chapter 12 – Biotechnology and its Applications
Biotechnology is a broad area of biology that uses living organisms and their components to develop and modify useful products for human welfare. The term “Biotechnology” was coined by Karoly Ereky in 1919, earning him the title of father of Biotechnology.
Chapter 13 – Organisms and Populations
Ecology is the branch of biology that studies the interactions among organisms and their environment. It involves the study of four levels of biological organization: organisms, populations, communities, and biomes.
Chapter 14 – Ecosystem
An ecosystem is a biological community where living and non-living components interact with each other and their physical environment. It is the functional unit of nature and can vary greatly in size.
Chapter 15 – Biodiversity and Conservation
Biodiversity refers to the variety of plant and animal life on Earth. It includes genetic diversity, species diversity, and ecological diversity. The term “biodiversity” was popularized by sociobiologist Edward Wilson.
Chapter 16 – Environmental Issues
The increase in human population has led to high demands for food, clothing, housing, fuels, and vehicles, resulting in pressure on land, water, air, and other natural resources. This has led to pollution, environmental degradation, biodiversity loss, and other environmental issues.
More Reference Links –
Other National and International Level Olympiads
| AI Olympiad | International Artificial Intelligence Olympiad 2020-21 |
| Coding Olympiad | International Coding Olympiad 2020-21 |
| IMO | International Maths Olympiad 2020-21 |
| ISO | International Science Olympiad 2020-21 |
| KVPY | Kishore Vaigyanik Protsahan Yojana |
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