CBSE Class 12 Biology Syllabus for Term 1 and Term 2 2023: Students preparing for the Class 12 Board Exams should be aware of the CBSE Class 12 Biology Syllabus in detail.
For the previous academic session, the syllabus was reduced by 30%, but for the current academic session 2023, the CBSE Board has incorporated Biology Class 12 full syllabus into the curriculum.
Continue reading to view and download the free PDF of the updated CBSE Biology Class 12 Syllabus.
Download CBSE Class 12 Biology Syllabus 2023 For Term 1 & Term 2
Students can download the CBSE Class 12 Biology Board Exam Term Wise Syllabus PDF from the link below.
Download CBSE Class 12 Syllabus For Biology Term 1 & Term 2 2023
CBSE Class 12 Biology Syllabus For Term 1 And Marks Distribution 2023
Here you can check the CBSE Class 12 Biology Term 1 2023 Marks Distribution.
| Units | Term 1 | Marks |
| VI | Reproduction: Chapters – 2, 3 and 4 | 15 |
| VII | Genetics and Evolution: Chapters – 5 and 6 | 20 |
| Total Term-I Theory Marks | 35 | |
| Practical Term – I | 15 | |
| Total | 50 | |
CBSE Class 12 Biology Term 1 Syllabus 2023 is mentioned below, please check.
Detailed CBSE Class 12 Biology Term 1 Syllabus 2023
Unit-VI Reproduction
- 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; fertilization, 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; medical termination of pregnancy (MTP); amniocentesis; infertility and assisted reproductive technologies – IVF, ZIFT, GIFT, AI (brief overview).
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; linkage and crossing over; Sex determination – in human being, birds, grasshopper, and honey bee; Mutation, Pedigree analysis, sex-linked inheritance – hemophilia, color blindness; Mendelian disorders in humans –sickle cell anemia, Phenylketonuria, thalassemia; chromosomal disorders in humans; Down’s syndrome, Turner’s and Klinefelter’s syndromes.
- Chapter-6: Molecular Basis of Inheritance
- Structure of DNA and RNA; DNA packaging; Search for genetic material and DNA as genetic material; DNA replication; Central Dogma; transcription, genetic code, translation; gene expression and regulation – lac operon; Human genome project; DNA fingerprinting.
CBSE Class 12 Biology Syllabus For Term 2 and Marks Distribution 2023
Here you can check the CBSE Class 12 Biology Term 2 2023 Marks Distribution.
| Units | Term 2 | Marks |
| VIII | Biology and Human Welfare: Chapters – 8 and 10 | 14 |
| IX | Biotechnology and its Applications: Chapters – 11 and 12 | 11 |
| X | Ecology and Environment: Chapters – 13 and 15 | 10 |
| Total Term-II Theory Marks | 35 | |
| Practicals Term – II | 15 | |
| Total | 50 | |
CBSE Class 12 Biology Term 1 Syllabus 2023 is mentioned below, please check.
Detailed CBSE Class 12 Biology Term 2 Syllabus 2023
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, ringworm) 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, Antibiotics; production and judicious use, sewage treatment, energy generation, and microbes as biocontrol agents and bio-fertilizers.
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: genetically modified organisms – Bt crops; RNA interference, Human insulin, gene therapy; molecular diagnosis; transgenic animals; biosafety issues, biopiracy, and patents.
Unit-X Ecology and Environment
- Chapter-13: Organisms and Populations
- Organisms and environment: Habitat and niche, abiotic factors, ecological adaptations; population interactions – mutualism, competition, predation, parasitism, commensalism; population attributes – growth, birth rate, and death rate, age distribution.
- Chapter-15: Biodiversity and Conservation
- Biodiversity – Concept, levels, 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.
CBSE Class 12 Biology Syllabus For Practical Exams Term 1 and Term 2
The following is a listing of the CBSE Grade 12 Biology Practical Syllabus/Bio syllabus for Class 12 Practical:
| Evaluation Scheme | |||
| Term 1 | Term 2 | Marks | |
| Part A | |||
| One Major Experiment | Experiment No. – 1 | Experiment No. – 3 | 5 |
| One Minor Experiment | Experiment No. – 2 | Experiment No. – 4, 5 | 3 |
| Part B | |||
| Spotting (3 Spots of 1 mark each) | B. 1, 2, 3, 4, 5 | B. 6, 7, 8 | 3 |
| Practical Record + Investigatory Project & Record + Viva Voce | 5 | ||
| Total | 15 | ||
List of Experiments for CBSE Class 12 Biology Syllabus For Practical 2023
Here is a complete list of CBSE Class 12 Biology experiments:
A. List of Experiments CBSE Class 12 Biology Term 1 & Term 2
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List of Experiments CBSE Class 12 Biology Term I:
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Isolate DNA from available plant material such as spinach, green pea seeds, papaya, etc.
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Prepare a temporary mount to observe pollen germination.
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List of Experiments CBSE Class 12 Biology Term II
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Prepare a temporary mount of the onion root tip to study mitosis.
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Collect water from two different water bodies around you and study them for pH, clarity, and presence of any living organism
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Collect and study soil from at least two different sites and study them for texture, moisture content, pH, and water-holding capacity. Correlate with the kinds of plants found in them.
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B. Study/observation of the following (Spotting)
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B.1 Flower adapted to pollination by different agencies (wind, insects, birds).
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B.2 Identification of stages of gamete development, i.e., T.S. of testis and T.S. of ovary through permanent slides (from grasshopper/mice).
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B.3 Meiosis in onion bud cells or grasshopper testis through permanent slides.
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B.4 T.S. of blastula through permanent slides (Mammalian).
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B.5 Prepared pedigree charts of any one of the genetic traits such as rolling of tongue, blood groups, ear lobes, widow’s peak, and colorblindness.
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| TERM – II: |
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B.6 Common disease-causing organisms like Ascaris, Entamoeba, Plasmodium, and any fungus-causing ringworm through permanent slides, models, or virtual images. Comment on symptoms of diseases that they cause.
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B.7 Two plants and two animals (models/virtual images) were found in xeric conditions. Comment upon their morphological adaptations.
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B.8 Two plants and two animals (models/virtual images) were found in aquatic conditions. Comment upon their morphological adaptations.
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Other Important Links Related to CBSE Class 12 Biology
- CBSE Class 12 Biology NCERT Solutions
- CBSE Class 12 Biology Sample Papers
- CBSE Class 12 Biology Previous Year Papers
- CBSE Class 12 Biology Revision Notes
Download Chapter-Wise NCERT Textbooks For CBSE Class 12 Biology 2023 For Term 1 & Term 2
Here you can download Chapter-wise NCERT Textbook for Class 12 Biology for Hindi and English Medium. The book is specifically focused on living Organisms, Evolution, and Biotech. While, for Human Ecology, there is a separate book.
Download Chapter-Wise NCERT Class 12 Biology Textbooks PDF For English Medium 2023 For Term 1 & Term 2
Here we are providing the chapter-wise NCERT Textbooks PDF based on CBSE Class 12 Biology Syllabus 2023. You can read it online or download it easily.
Unit VI Reproduction
- Chapter 1 Reproduction in Organisms
- Chapter 2 Sexual Reproduction in Flowering Plants
- Chapter 3 Human Reproduction
- Chapter 4 Reproductive Health
Unit VII Genetics and Evolution
- Chapter 5 Principles of Inheritance and Variation
- Chapter 6 Molecular Basis of Inheritance
- Chapter 7 Evolution
Unit VIII Biology in Human Welfare
- Chapter 8 Human Health and Disease
- Chapter 9 Strategies for Enhancement in Food Reproduction
- Chapter 10 Microbes in Human Welfare
Unit IX Biotechnology
Unit X Ecology
- Chapter 13 Organisms and Populations
- Chapter 14 Ecosystems
- Chapter 15 Biodiversity and Conservation
- Chapter 16 Environmental Issues
Download Chapter-Wise NCERT Class 12 Biology Textbooks PDF For Hindi Medium 2023 For Term 1 & Term 2
Here we are providing the chapter-wise NCERT Textbooks PDF based on CBSE Class 12 Biology Syllabus 2023. You can read it online or download it easily.
इकाई छः जनन
- अध्याय 1 जीवों में जनन
- अध्याय 2 पुष्पी पादपों में लैंगिक प्रजनन
- अध्याय 3 मानव जनन
- अध्याय 4 जनन स्वास्थ्य
इकाई सात: आनुवंशिकी तथा विकास
इकाई आठ: मानव कल्याण में जीव विज्ञान
- अध्याय 8 मानव स्वास्थ्य तथा रोग
- अध्याय 9 खाद्य उत्पादन में वृद्धि की कार्यनीति
- अध्याय 10 मानव कल्याण में सूक्ष्मजीव
इकाई नौ: जैव प्रौद्योगिकी
इकाई दस: पारिस्थितिकी
- अध्याय 13 जीव और समष्टियाँ
- अध्याय 14 पारितंत्रा
- अध्याय 15 जैव-विविध्ता एवं संरक्षण
- अध्याय 16 पर्यावरण के मुद्दे
We have covered the detailed guide on the Revised CBSE Class 12 Biology Syllabus For term 1 & Term 2 2023. Feel free to ask any questions related to CBSE Class 12 Biology in the comment section below.
FAQs- CBSE Class 12 Biology Syllabus 2023 For Term 1 & Term 2
Here you can check some important faqs or CBSE Class 12 Biology Syllabus For Term 1 & Term 2 2023.
Is the NCERT book enough to prepare for the exams?
Yes, NCERT books are enough to prepare for the exams and cover the CBSE class 12 Biology syllabus 2023.
Is this CBSE 12th syllabus 2023 latest?
Yes, this syllabus is the latest syllabus, as released by CBSE after the reduction.
What are the passing marks in CBSE Class 12th exams?
Students must score at least 33 percent marks per subject in order to pass the CBSE Class 12 exams.
Where can I download the CBSE syllabus for Class 12 Biology 2023?
Go through the above article to download CBSE Syllabus for Class 12 Biology 2023.
What are the units in the CBSE Class 12 Biology Syllabus 2023?
The units in CBSE Class 12 Biology Syllabus are: 1) Reproduction 2) Genetics and Evolution 3) Biology and Human Welfare 4) Biotechnology and its Applications 5) Ecology and Environment
How many marks are in the theoretical Papers in CBSE Class 12 biology?
A total of 70 marks for theoretical Paper in the CBSE Class 12 Biology Syllabus.
How many marks are in Practical/ Project Work in Class 12 biology?
As per the CBSE Class 12 Biology Syllabus 2023, for Practical/ Project Work in Class 12 biology, it is 30 Marks.
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