NCERT Syllabus for Class 12 Biology 2022-2023, Download PDF and Get Preparation Tips

Safalta Expert Published by: Noor Fatima Updated Thu, 08 Sep 2022 11:00 AM IST

Highlights

Here is the information about NCERT Syllabus for Class 12 Biology. You can give a read to this blog and get all the information about the  NCERT Curriculum for Class 12 Biology. 

Candidates who are in Class 12 should refer to the NCERT Syllabus for Class 12 Biology 20222-2023 so to get an idea about the curriculum and prepare for the examination in a good way. Having knowledge about the syllabus can help plan your studies, make timetables, and work to score excellent grades. Class 12 Biology syllabus explains to you the marking scheme, course content, project details, and other important components of the NCERT Syllabus for Class 12 Biology 2022-2023. We have also provided the link for PDF download. You can find it below in the blog. The NCERT Syllabus is issued and designed by the National Council of Educational Research and Training (NCERT). This curriculum is mostly prescribed by the CBSE and other state board exams. They follow the NCERT syllabus because it is very relevant and very informative.

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Moreover, it also adds worth to their syllabus and inculcates the value of education in children. It helps gives a clear, sequential flow of concepts that boost the understanding level of the students. By knowing the NCERT Syllabus for Class 12 Biology, candidates can get knowledge of various board exams and competitive exams such as KVPY and NEET. Biology is a theoretical subject. Therefore, students can score well if they study with all their efforts, attention, and dedication. The important components of the NCERT syllabus for Class 12 Biology 2022-2023 including marking pattern, course structure, and practical details are summarised below. Different CBSE and state board schools follow the NCERT Syllabus for class 12 Biology to add value to their curriculum. This Syllabus is released by the National Council of Educational Research and Training (NCERT). Students can understand the NCERT Syllabus for Class 12 Biology in this blog.

Recommended: Study for your Exams with Safalta School online. We provide Preparation materials for Classes 9-12 that can boost your preparations.

Table of Content
NCERT Syllabus for Class 12 Biology 2022-2023
Highlights of NCERT syllabus for Class 12 Biology
NCERT Syllabus for Class 12 Biology: Marks Distribution 
NCERT Syllabus for Class 12 Biology: Course structure
NCERT Syllabus for Class 12 Biology: Practical Details
NCERT Syllabus for Class 12 Biology: PDF Download
Benefits of NCERT syllabus for Class 12 Biology
Tips to prepare the NCERT Syllabus for Class 12 Biology
 

NCERT Syllabus for Class 12 Biology 2022-2023

Here is the Syllabus for Biology for Class 12 for the academic session 2022-2023. Students can go through the essential components of the NCERT syllabus below. Exam structure, unit-wise syllabus, practical details, and PDF link is there in the blog. You can easily learn the revised and updated curriculum.
 

Highlights of NCERT Syllabus for Class 12 Biology

  • There are 5 units in the NCERT Syllabus for Class 12 Biology.
  • The NCERT books are prepared according to the NCERT syllabus.
  • NCERT Syllabus for Class 12 Biology provides a separate curriculum for theory and practical exams.
  • The marking schemes differ from one unit to another.
  • The theory portion is of 70 marks, whereas 30 marks are under the practical section.

NCERT Syllabus for Class 12 Biology 2022-2023: Marks Distribution

The Marks distribution for Biology Class 12 for 2022-2023 is tabulated below. You can have a look.  
Unit  Topic Marks
VI Reproduction 14
VII Genetics & Evolution 18
VIII Biology & Human Welfare 14
IX Biotechnology & its Applications 10
X Ecology & Environment 14
  Practical Work 30
  Total 100
 

NCERT Syllabus for Class 12 Biology 2022-2023: Course Structure

The course strcuture for Biology Class 12 for the academic session 2022-2023 is given below. Candidates can have a look over it.
 

Unit VI. Reproduction

Chapter 1: Reproduction in Organisms
Reproduction-  A characteristic feature of all organisms for continuation of species
Modes of Reproduction −
  • Asexual reproduction
  • Sexual reproduction
Asexual reproduction
Modes-
  • Binary fission
  • Sporulation
  • Budding
  • Gemmule
  • Fragmentation
  • Vegetative propagation in plants
Chapter 2: Sexual Reproduction in Flowering Plants
  • Flower structure
  • Development of male and female gametophytes
Pollination −
Types
  • Agencies
  • 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 −
  • Apomixes
  • Parthenocarpy
  • Polyembryony
  • Significance of seed and fruit formation
Chapter 3: Human Reproduction
  • Male and female reproductive systems
  • Microscopic anatomy of testis and ovary
Gametogenesis-
  • Spermatogenesis
  • Oogenesis
  • Menstrual cycle
  • Fertilisation embryo development up to 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 (STD)
  • Birth control-
  • Need and Methods
Contraception
  • 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
Mendelian Inheritance

Deviations from Mendelism-
  • Incomplete dominance
  • Co-dominance
  • Multiple alleles
  • Inheritance of blood groups
  • Pleiotropy
  • Elementary idea of polygenic inheritance
  • Chromosome theory of inheritance
  • Chromosomes and genes
Sex determination in-
  • Humans
  • Birds
  • Honey bee
  • Linkage and crossing over
Sex linked inheritance-
  • Haemophilia
  • Colour blindness
  • Mendelian disorder in humans
  • Thalassemia
Chromosomal disorders in humans-
  • Down's syndrome
  • Turner's
  • 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 and human ganeome project
  • DNA fingerprinting
Chapter 7: Evolution
  • Origin of life
  • Biological evolution and evidences for biological evolution (Paleontological, comparative anatomy, embryology and molecular evidence)
  • Darwin's contribution
  • Modern Synthetic theory of Evolution
Mechanism of evolution-
  • Variation (Mutation and Recombination)
  • 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
  • Filariasis
  • Ascariasis
  • Typhoid
  • Pneumonia
  • Common cold
  • Amoebiasis
  • Ring worm
Basic concepts of immunology – Vaccines −
  • Cancer
  • HIV
  • AIDs
Adolescence, drug and alcohol abuse

Chapter 9: Strategies for Enhancement in Food Production

Improvement in food production −
  • Plant breeding
  • Tissue culture
  • Single cell protein
  • Biofortification
  • Apiculature
  • Animal husbandry
Chapter-10: Microbes in Human Welfare
  • In household food processing
  • Industrial production
  • Sewage treatment
  • Energy generation and as biocontrol agents
  • Biofertilizers
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, 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
  • Niche
  • Population
  • Ecological adaptations
Population interactions-
  • Mutualism
  • Competition
  • Predation
  • Parasitism
Population attributes-
  • Growth
  • Birth rate
  • Death rate
  • Age distribution
Chapter 14: Ecosystem
  • Patterns
  • Components
  • Productivity
  • 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
  • Concept of biodiversity
  • Patterns of biodiversity
  • Importance of biodiversity
  • Loss of biodiversity
Biodiversity conservation-
  • Hotspots
  • Endangered organisms
  • Extinction
  • Red data book
  • Biosphere reserves
  • National parks
  • Sanctuaries
  • Ramsar sites
Chapter-16: Environmental Issues
  • Air pollution and its control
  • Water pollution and its control
  • Agrochemicals and their effects
  • Solid waste management
  • Radioactive waste management
  • Greenhouse effect and climate change
  • Ozone layer depletion
  • Deforestation
Any one case study as success story depicting environmental problem(s). 
 

NCERT Syllabus for Class 12 Biology 2022-2023: Practical Details

Candidates can look over the practical details for Biology Syllabus Class 12 below. We have arranged the information regarding practical section in a tabulated form.
S. No. Parts Suggested Topics
1 Part A: List of Experiments
  • Study pollen germination on a slide.
  • 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.
  • Collect water from two different water bodies around you and study them for pH, clarity and presence of any living organisms.
  • Study the presence of suspended particulate matter in air at two widely different sites.
  • Study of plant population density by quadrat method.
  • Study of plant population frequency by quadrat method.
  • Prepare a temporary mount of onion root tip to study mitosis.
  • Study the effect of different temperatures and three different pH on the activity of salivary amylase on starch.
  • Isolation of DNA from available plant material such as spinach, green pea seeds, papaya, etc.
2 Part B: Study/observation of the following (Spotting)
  • Flowers adapted to pollination by different agencies (wind, insect, bird).
  • Pollen germination on stigma through a permanent slide.
  • Identification of stages of gamete development, i.e., T.S. of testis and T.S. of ovary through permanent slides (from grasshopper/mice).
  • Meiosis in onion bud cell or grasshopper testis through permanent slides.
  • T.S. of blastula through permanent slides.
  • Mendelian inheritance using seeds of different colour/sizes of any plant.
  • Prepared pedigree charts of any one of the genetic traits such as rolling of tongue, blood groups, ear lobes, widow's peak and colour blindness.
  • Controlled pollination - emasculation, tagging and bagging.
  • Common disease causing organisms like Ascaris, Entamoeba, Plasmodium, Roundworm through permanent slides or specimens. Comment on symptoms of disease that they cause.
  • Two plants and two animals (models/virtual images) found in xeric conditions. Comment upon their morphological adaptations.
  • Two plants and two animals (models/virtual images) found in aquatic conditions. Comment upon their morphological adaptations. 
 

NCERT Syllabus for Class 12 Biology 2022-2023: PDF Download

NCERT Syllabus for Class 12 Biology 2022-2023 PDF

 

 Benefits of NCERT syllabus for Class 12 Biology

  • The NCERT syllabus for Class 12 Biology is a major factor that can help students in score good marks in their board exams.  
  • Other benefits offered by the NCERT Syllabus for Class 12 Biology are as follows -
  • The curriculum assists students in preparing for board exams in an organized pattern while keeping the marking scheme in mind.
  • The NCERT Syllabus for Class 12 Biology defines the marks weightage of each unit that helps students study according to the marks distribution.
  • This Curriculum is not only helpful for class 12 Biology but competition exams and scholarship exams.
  • The NCERT Syllabus for Class 12 Biology gives an interpretation of the significant topics in the curriculum.

Tips to prepare the NCERT Syllabus for Class 12 Biology 2022-2023

  • Try to frame your answers in a graphical representation and describe them in an organized and appealing manner. You should also draw diagrams to make your answers more explainable. This way is more good-looking and perceptive to the examiner.
  • Make a table of important species, life processes, and other important concepts in detail so that you can go through them repetitively, and remember them well.
  • Students should learn the crucial topics daily to memorize them well and score good grades in the board examinations.
  • After finishing the syllabus, students should solve Class 12 Biology sample papers to self-assess their practice for examinations.
  • Students who are aiming to appear in the class 12 board examination this year, should learn all the important species, life processes, and other important concepts. This will lend a hand in solving the numerical questions.
  • Candidates are requested to understand the important species, life processes, and other important concepts. This will assist them in enhancing their knowledge.

How many units are there in the NCERT Syllabus for Class 12 Biology?

There are 5 units and 16 chapters in the NCERT Syllabus for Class 12 Biology.

How many sections are there in the NCERT Syllabus for Class 12 Biology?

There are two sections; theory and practical. The theory portion grabs 70 marks while 30 marks are under the practical section.

Where can I download the NCERT Syllabus for Class 12 Biology?

Candidates can get the NCERT Syllabus for Class 12 Biology from Safalta's website. Moreover, they can also download it from the Official website of NCERT. 

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