CBSE Class 12th Biology Syllabus 2021: Students of CBSE Class 12th can now download the latest Biology Syllabus 2021 from here and can also check out all the important topics that they need to prepare their CBSE Class 12th Board Exams 2020-21. Here we have provided the class 12th biology syllabus 2020-21 in detail including the Class 12th Biology Unit Wise Marks Distribution. In the beginning of this year CBSE has announced the changes in the syllabus for class 10th and 12th hence it becomes necessary for the students to keep themselves updates with CBSE Class 12th Syllabus 2020-21.
We have discussed the biology class 12th syllabus 2020-21 here in particular and for students assistance also provided the cbse class 12 biology syllabus pdf. For the preparation of Class 12th Board Exams it is important to comprehensively study the CBSE NCERT Class 12 Biology Syllabus. We have also included some other important links where you can find relevant information regarding Class 12th CBSE Syllabus.
CBSE Class 12th Biology Syllabus 2021 Board Exam Check All Topics
Students are highly advised to check out the latest cbse class 12th syllabus in order to understand all the changes that have been recently introduced by the authority. Before diving into your board exam preparations you must also check out biology unit wise marks distribution which will allow you to allot your time more effectively to each unit according to its marks weightage. Many students don’t pay attention to such details and waste their time on unnecessary topics and hence are unable to score good marks.
Below you can see how CBSE has done Class 12 Biology Unit Wise Marks Distribution. The information is provided in a tabular format.
|UNIT No.||NAME OF UNIT||MARKS||PERIOD|
|2||Genetics and Evolution||18||40|
|3||Biology and Human Welfare||14||30|
|4||Biotechnology and its Applications||10||30|
|5||Ecology and Environment||12||30|
CBSE Class 12th Biology Syllabus 2020-21
Below we have given the cbse class 12 biology syllabus 2020-21 in detail. Also you can download the given syllabus directly from the link provided.
Chapter-2: 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-3: 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-4: Reproductive Health
Need for reproductive health and prevention of Sexually Transmitted Diseases (STDs); birth
control – need and methods, contraception and medical termination of pregnancy (MTP);
amniocentesis; infertility and assisted reproductive technologies – IVF, ZIFT, GIFT (elementary
idea for general awareness).
Unit-VII Genetics and Evolution
Chapter-5: Principles of Inheritance and Variation
Heredity and variation: Mendelian inheritance; deviations from Mendelism – incomplete
dominance, co-dominance, multiple alleles and inheritance of blood groups, pleiotropy;
elementary idea of polygenic inheritance; chromosome theory of inheritance; chromosomes and
genes; Sex determination – in human being, birds and honey bee; linkage and crossing over; sex
linked inheritance – haemophilia, colour blindness; Mendelian disorders in humans -thalassemia;
chromosomal disorders in humans; Down’s syndrome, Turner’s and Klinefelter’s syndromes.
Chapter-6: Molecular Basis of Inheritance
Search for genetic material and DNA as genetic material; Structure of DNA and RNA; DNA
packaging; DNA replication; Central Dogma; transcription, genetic code, translation; gene
expression and regulation – lac operon; Genome, Human and rice genome projects; DNA
Unit-VIII Biology and Human Welfare
Chapter-8: Human Health and Diseases
Pathogens; parasites causing human diseases (malaria, dengue, chikungunya, 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
Chapter-10: Microbes in Human Welfare
Microbes in food processing, industrial production, sewage treatment, energy generation and
microbes as bio-control agents and bio-fertilizers. Antibiotics; production and judicious use.
Unit-IX Biotechnology and its Applications
Chapter-11: Biotechnology – Principles and Processes
Genetic Engineering (Recombinant DNA Technology).
Chapter-12: Biotechnology and its Application
Application of biotechnology in health and agriculture: Human insulin and vaccine production,
stem cell technology, gene therapy; genetically modified organisms – Bt crops; transgenic
animals; biosafety issues, biopiracy and patents.
Unit-X Ecology and Environment
Chapter-13: Organisms and Populations
Organisms and environment: Habitat and niche, population and ecological adaptations;
population interactions – mutualism, competition, predation, parasitism; population attributes –
growth, birth rate and death rate, age distribution.
Chapter-15: Biodiversity and its Conservation
Biodiversity – Concept, patterns, importance; loss of biodiversity; biodiversity conservation;
hotspots, endangered organisms, extinction, Red Data Book, Sacred Groves, biosphere reserves,
national parks, wildlife, sanctuaries and Ramsar sites.
Download CBSE Class 12 Biology Syllabus 2020-21 PDF
The above provided syllabus is also available here in pdf format so that if you need you can download it easily. No more going from one page to another. Just click on the given link below and download class 12 biology syllabus 20201 directly.
Download Class 12 Biology Syllabus 20201 – CLICK HERE
For information regarding practicals, list of experiments and prescribed books you must download the class 12 biology syllabus 2020-21 pdf file. All such information is given there. You can also bookmark this page, we keep updating the latest feeds regarding CBSE Class 12th Syllabus here.
Curriculum Deduction Details (Deleted Portion only for the purpose of Annual Examination-2021) This has to be read along with the revised syllabus and also with the Alternative Calendar of NCERT
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