Check CBSE Syllabus 2021-22 for Class 12 Biology (Term 1) exams. Link to download the PDF of CBSE Syllabus 2021-22 for Class 12 Biology (Term 1) is also given at the end. It is important for the preparation of the exam. Students are also advised to check previous year papers and sample papers of CBSE Class 12 Biology to learn important questions.
NCERT Solutions for Class 12: Download PDF
CBSE Class 12th Biology Syllabus for Term 1: CBSE Academic Session 2021-2022
| Units | Term 1 | Marks |
| VI | Reproduction: Chapter - 2, 3 and 4 | 15 |
| VII | Genetics and Evolution: Chapter – 5 and 6 | 20 |
| Units | Term 2 | Marks |
| IX | Biology and Human Welfare: Chapter – 8 and 10 | 14 |
| IX | Biotechnology and its Applications: Chapter – 11 and 12 | 11 |
| X | Ecology and Environment: Chapter – 13 and 15 | 10 |
| Total Theory (Term – I and Term – II) | 70 | |
| Practicals Term – I | 15 | |
| Practicals Term – II | 15 | |
| Total | 100 | |
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; 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 fingerprinting.
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.
For more details & information about CBSE Class 12 Biology Practical Syllabus 2021-22, download the PDF from the following link
CBSE Class 12th Biology Syllabus (PDF) for Term 1: Academic Session 2021-2022
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