OFFICIAL SYLLABUS 2022
Subject - Biology
Subject Code - 42
| Theory Paper Detail | Practical Paper Detail |
| Time - 03:15 Hours | Time - 04:00 Hours |
| Marks for Question Paper - 56 | Marks for Question Paper - 30 |
| Sessional - 14 | Sessional - 0 |
| Total Marks - 70 | Total Marks - 30 |
Unit VI: Reproduction
Chapter 1: Reproduction in Organisms
Unsexual reproduction - binary fission , sporulation. buds, gemmules, vegetative propagules, fragmentation
Sexual reproduction - gametogenesis, sexuality in organisms: unisexual,bisexual, hermaphrodites, Cell division during gamete formation - meiosis division, gametes transfer, fertilization: internal
fertilization, external fertilization, non-reproductive reproduction–the zygote, embryogenesis, cell differentiation, egg progenitors, living progenitors
Chapter 2: Sexual Reproduction in Flowering Plants
floral structure,Pre-fertilization structures and phenomena: stamens, microfibrils and pollinators, pistil, neoplasms and embryos, pollination , Double fertilization , Fertilization, Post-Formations and Events, Embryos, Embryos, Seeds , Apomixis and Polyembryony.
Chapter 3: Human Reproduction
The Male Reproductive System , The Female Reproductive System , Gametogenesis , Menstrual Cycle, Fertilisation and Implantation ,Pregnancy and Embryonic Development , Parturition and Lactation.
Chapter 4: Reproductive Health
Reproductive Health –Problems and Strategies , Population Explosionand Birth Control , Medical Termination of Pregnancy , Sexually Transmitted Diseases , Infertility.
Unit VII: Genetics and Evolution
Chapter 5: Principles of Inheritance and Variation
Mendel’s Laws of Inheritance , Inheritance of One Gene: Law of Dominance, Law of Segregation, Codominance , Inheritance of Two Genes: Law of Independent Assortment, Chromosomal Theory of Inheritance, Linkage and Recombination , POLYGENIC INHERITANCE , PLEIOTROPY , Sex Determination: Sex Determination in Humans, Sex Determination in Honey Bee , Mutation , Genetic Disorders: Pedigree Analysis, Mendelian Disorders-Colour Blidness, Haemophilia, Sickle-cell anaemia, Phenylketonuria, Thalassemia ,Chromosomal Disorders.
Chapter 6: Molecular Basis of Inheritance
The DNA , The Search for Genetic Material , RNA World , Replication , Transcription , Genetic Code , Translation , Regulation of Gene Expression , Human Genome Project , DNA Fingerprinting.
Chapter 7: Evolution
Origin of Life , Evolution of Life Forms – A Theory, What are the Evidences for Evolution?, What is Adaptive Radiation, Biological Evolution,Mechanism of Evolution , Hardy – Weinberg Principle , A Brief Account of Evolution , Origin and Evolution of Man
Unit VIII: Biology and Human Welfare
Chapter 8: Human Health and Diseases
Common Diseases in Humans- Bacterial, virus borne, fungal, protozoan and worm borne , IMMUNITY - Innate Immunity, Acquired Immunity, Active and Passive Immunity, Vaccination and Immunization, Allergies, Auto Immunity, Immune System in the Body , AIDS , CANCER 8.5 DRUGS AND ALCOHOL ABUSE.
Chapter 9: Strategies for Enhancement in Food Production
ANIMAL HUSBANDRY- Dairy Farm Management, Poultry Farm Management, Animal Breeding, Beekeeping, Fisheries ,What is Plant Breeding?, Plant Breeding for Disease Resistance, Plant Breeding for Developing Resistance to Insect Pests , SINGLE CELL PROTEINS , TISSUE CULTURE.
Chapter 10: Microbes in Human Welfare
MICROBES IN HOUSEHOLD PRODUCTS , MICROBES IN INDUSTRIAL PRODUCTS , MICROBES IN SEWAGE TREATMENT , MICROBES IN PRODUCTION OF BIOGAS , MICROBES AS BIOCONTROL AGENTS , MICROBES AS BIOFERTILISERS.
Unit IV: 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, bio-piracy and patents.
Unit V: 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 14: Ecosystem
Ecosystems: Patterns, components; productivity and decomposition; energy flow; pyramids of number, biomass, energy; nutrient cycles (carbon and phosphorous); ecological succession;ecological services-carbon fixation, pollination, seed dispersal, oxygen release (in brief).
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.
Chapter 16: Environmental Issues
...There will be Two Paper in this Subject. (Theory + Practical)
Time Duration : Theory - 3:15 Hrs, Practical -3:00 Hrs.
Maximum Marks : 70 + 30 = 100 Marks
Units & their Weightage
| Chapter | Topic | Marks |
| 1 | Reproduction | 02 |
| 2 | Sexual Reproduction in Flowering Plants | 04 |
| 3 | Human Reproduction | 03 |
| 4 | Reproductive Health | 02 |
| 5 | Principles of Inheritance and Variation | 05 |
| 6 | Molecular Basis of Inheritance | 06 |
| 7 | Evolution | 03 |
| 8 | Human Health and Disease | 04 |
| 9 | Strategies for Enhancement in Food Production | 03 |
| 10 | Microbes in Human Welfare | 04 |
| 11 | Biotechnology: Principles And Processes | 04 |
| 12 | Biotechnology and its Applications | 04 |
| 13 | Organisms and Populations | 04 |
| 14 | Ecosystem | 04 |
| 15 | Biodiversity and Conservation | 02 |
| 16 | Environmental Issues | 02 |
| Total | 56 |
Evaluation Scheme (30 Marks)
| Evaluation Scheme for Examination | Marks |
| One Major Experiment | 05 |
| One Minor Experiment | 04 |
| Slide Preparation | 05 |
| Spotting | 07 |
| Practical Record + Viva Voc. | 04 |
| Investigatory Project and its Project and its Record + Viva Voce | 05 |
| Total | 30 |
Conditions of eligibility for admission to class XII
1. Candidates who have been studying in a School recognised by or affiliated to this Board or any other recognised Board of Secondary Education in India.
2. Candidates can not take admission directly in class XII.
3. Candidates had completed a regular course of study for class XI and passed class XI examination from a school affilicated to this Board.
4. The candidates percentage for attendance should be 75% so that the Board to make him/her eligible for the Examinations.
5. Candidate can be admitted to a school only on the transfer of the parents(s) or shifting of their families from one place to another, after procuring from the student the marksheet and the Transfer Certificate duly countersigned by the Educational Authorities of the Board Concerned.
6. There is no age limit for candidates taking the Examination.
7. Candidate should have doucments in support of his having passed the qualifying or equivalent qualifying examination.
OFFICIAL TIME TABLE 2022
Biology Paper dated 16 th April, 2022 (Saturday) from 9:00 AM to 11:45 AM
| Date | Subject(s) | Timing |
| March 24, 2022 | Psychology | 9:00 Am to 11:45 Am |
| March 25, 2022 | Environmental Science | 9:00 Am to 11:45 Am |
| March 26, 2022 | Public administration | 9:00 Am to 11:45 Am |
| March 28, 2022 | Physical education | 9:00 Am to 11:45 Am |
| March 29, 2022 | Vocal Music/ Instrumental Music | 9:00 Am to 11:45 Am |
| March 30, 2022 | Sociology | 9:00 Am to 11:45 Am |
| April 1, 2022 | Sanskrit literature, Sanskrit language | 9:00 Am to 11:45 Am |
| April 4, 2022 | Geography, Accountancy, Physics | 9:00 Am to 11:45 Am |
| April 6, 2022 | English (Compulsory) | 9:00 Am to 11:45 Am |
| April 8, 2022 | Hindi (Compulsory) | 9:00 Am to 11:45 Am |
| April 11, 2022 | History, Chemistry, Agricultural Chemistry, Business Studies | 9:00 Am to 11:45 Am |
| April 12, 2022 | English Literature/ Tankan Lipi (Hindi) | 9:00 Am to 11:45 Am |
| April 13, 2022 | Mathematics | 9:00 Am to 11:45 Am |
| April 16, 2022 | Economics, Biology, English, Shorthand Hindi, Agricultural Biology | 9:00 Am to 11:45 Am |
| April 18, 2022 | Computer Science, Informatics Practices | 9:00 Am to 11:45 Am |
| April 19, 2022 | Home Science | 9:00 Am to 11:45 Am |
| April 20, 2022 | Philosophy, General Science | 9:00 Am to 11:45 Am |
| April 21, 2022 | Political Science, Geology, Agriculture | 9:00 Am to 11:45 Am |
| April 22, 2022 | Vocational subjects | 9:00 Am to 11:45 Am |
| April 23, 2022 | Hindi literature, Urdu literature, Sindhi literature, Gujarati literature, Punjabi literature, Rajasthani literature, Persian literature, Prakrit language, Typing lipi (English) | 9:00 Am to 11:45 Am |
| April 26, 2022 | Painting | 9:00 Am to 11:45 Am. |
ANALYSIS - (SR. SECONDARY 2020) CODE - SS-42
1. There are total 30 questions in this part.
2. This question paper is divided into four parts: Part A (One Word type Question), Part B (Very Short Answer Type Question), Part C (Short Answer Type Question) and Part D (Long Answer Type Question)
3. All parts are compulsory. Solve all the parts of a question together.
4. There are total 13 questions in Part A. Question 1 to 13 carry 1 marks for each question.
5. There are total 11 questions in Part B. Question 14 to 24 carry 2 marks for each question.
6. There are total 3 questions in Part C. Question 25 to 27 carry 3 marks for each question.
7. There are total 3 questions in Part D. Question 28 to 30 carry 4 marks for each question.
8. Question Nos. 14, 27, 28, 29 and 30 have internal choices.
Comment
1. The difficulty level of the Biology paper 2020: Easy
2. All the questions in the paper were asked from the latest NCERT Syllabus.
3. The average range of expected marks was 60+ (out of 70 ).
1. There are total 30 questions in this part.
2. This question paper is divided into four parts: Part A (One Word type Question), Part B (Very Short Answer Type Question), Part C (Short Answer Type Question) and Part D (Long Answer Type Question)
3. All parts are compulsory. Solve all the parts of a question together.
4. There are total 13 questions in Part A. Question 1 to 13 carry 1 marks for each question.
5. There are total 11 questions in Part B. Question 14 to 24 carry 2 marks for each question.
6. There are total 3 questions in Part C. Question 25 to 27 carry 3 marks for each question.
7. There are total 3 questions in Part D. Question 28 to 30 carry 4 marks for each question.
8. Question Nos. 14, 27, 28, 29 and 30 have internal choices.
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