CBSE Class 12 Biology Syllabus 2024-25: Updated Curriculum

Unit-VI: Reproduction

Chapter-2: Sexual Reproduction in Flowering Plants

Flower structure; development of male and female gametophytes; pollination - types, agencies and examples; out breeding 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 humans, 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

Morphology of different parts of flowering plants: root, stem, leaf, inflorescence, flower, fruit and seed. Description of family Solanaceae

Chapter- 7: Evolution

Origin of life; biological evolution and evidences for biological evolution (paleontology, comparative anatomy, embryology and molecular evidences); Darwin's contribution, modern synthetic theory of evolution; mechanism of evolution - variation (mutation and recombination) and natural selection with examples, types of natural selection; Gene flow and genetic drift; Hardy - Weinberg's principle; adaptive radiation; human evolution.

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 abuse.

Chapter-10:  Microbes in Human Welfare

Microbes in food processing, industrial production, sewage treatment, energy generation andmicrobes 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 Applications

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

Population interactions - mutualism, competition, predation, parasitism; population attributes - growth, birth rate and death rate, age distribution. (Topics excluded: Organism and its Environment, Major Aboitic Factors, Responses to Abioitic Factors, Adaptations)

Chapter-14: Ecosystem

Ecosystems: Patterns, components; productivity and decomposition; energy flow; pyramids of number, biomass, energy (Topics excluded: Ecological Succession and Nutrient Cycles)

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.

Deleted Chapter List Class 12 Biology Syllabus

Class 12 Biology Practicals Syllabus - Evaluation Scheme

The following table highlights the mark distribution for the Class 12 Biology lab experiments which students can refer to gain an overview of the syllabus for lab practicals.

Class 12 Biology Practicals Syllabus:

The following tables contain the list of experiments that comprise the Class 12 Biology Practicals Syllabus:

Question Paper Design CBSE Class 12 Biology Syllabus (Theory) 2024-25

Note:

• Typology of questions: VSA includes MCQs, assertion–reasoning type questions, SA, LA-I, LA-II, and source-based/case-based/passage-based/integrated assessment questions.

• An internal choice of approximately 33% would be provided.

Prescribed Books:

1. Biology, Class-XII, Published by NCERT 

2. Other related books and manuals brought out by NCERT (consider multimedia also) 

3. Biology Supplementary Material (Revised). Available on the CBSE website.

Why Should You Download Class 12 Biology Syllabus 2024-25?

• The Biology Syllabus Class 12 CBSE 2024-25 PDF outlines all the different sections and chapters of the question paper so that students can easily grasp what to expect in the examination.

• The PDF concisely and comprehensively highlights the Class 12 Biology Syllabus 2024-25, covering only the relevant details to keep it accurate and help students quickly find what they need.

• The Class 12 Biology Syllabus PDF highlights the chapters and units of the textbook and covers the practicals and lab experiments to ensure students understand the curriculum completely.

• The syllabus PDF provides a complete distribution of the weightage of marks across all the chapters and sections to give a complete sense of what can be asked in the exam.

• The Class 12 Biology Syllabus PDF is available for FREE download so that students can access it anywhere, anytime as they like.

The Biology Syllabus Class 12 CBSE 2024-25 offers a complete, comprehensive insight into the curriculum. It covers all the different chapters, topics, and weightage across them to provide an easy and quick overview as and when the students want. These are available in FREE PDF format to enable offline viewing. Rest assured, students can use the Class 12 Biology Syllabus PDF to gain a headstart on their study process.

Important Topic Pages -  Class 12 Biology

Along with the syllabus structure for Class 12 Biology, students can also refer to the following table for further comprehension of the topics that comprise Class 12 Biology.

Related Study Material Class 12 Biology