TN 12th Biology Syllabus 2023-24: Check Chapter-Wise Topics

Result Date: 06 May '24 (Tentative)
Megha Sharma
Megha Sharma

Updated on - Jan 10, 2024

The TN 12th Biology Syllabus 2023-24 is divided into zoology and botany, containing various topics under each subject. The TN 12th biology paper has four sections and is conducted for 150 marks. The syllabus helps the students to learn about the essential chapters, marking criteria, and types of questions asked. 

The Directorate of Government Examinations, Tamil Nadu releases the TN 12th 2023-24 Biology Syllabus online in PDF format. The TN 12th Board exams are scheduled from March 1 to March 22, 2024, and the candidates must strategize their preparations by referring to the syllabus. 

Table of Contents

The TN 12th Biology Syllabus 2023-24 comprises Zoology and Botany subjects set by the Tamil Nadu board authorities. Students can refer to the PDF link for the syllabus below and have detailed information about the marking pattern and the variety of questions asked in the exams.

PDF Links for TN 12th Biology Syllabus 
Particulars PDF Link
TN 12th Biology Syllabus 2023-24 for Zoology Download Now 
TN 12th Biology Syllabus 2023-24 for Botany Download Now

Check for all subjects: TN 12th Syllabus 2023-24

TN 12th Biology Syllabus 2023-24: Chapter Wise Topics

The TN 12th Biology Syllabus 2023-24 is divided into Zoology and Botany. The biology paper consists of 150 marks and has 4 sections. Students can refer to the vital topics mentioned below and prepare accordingly.

TN 12th Biology  Syllabus 2023-24 for Botany

The TN 12th Biology Syllabus 2023-24 for Botany contains various topics students must consider from the table below.

Important Topics for TN 12th for Botany
Units Topics

Taxonomy of Angiosperms
  1. Type of classification: artificial, natural, phylogenetic
  2. Biosystematics
  3. Binomial nomenclature herbarium 

Plant Anatomy
  1. Tissue and tissue system anatomy of monocot and dicot root 
  2. Anatomy of monocot and dicot stem 
  3. Anatomy of dicot leaf

Cell Biology and Genetics
  1. Chromosome structure and types 
  2. Genes and genomes linkage 
  3. Chromosome aberrations DNA a
  4. Structure of RNA and its type

Biotechnology
  1. Recombinant DNA technology 
  2. Transgenic plants and microbes 
  3. Plant tissue culture and its application 
  4. Protoplast fusion 
  5. SCP

Plant physiology
  1. Photosynthesis
  2. Factors affecting photosynthesis mode of nutrition 
  3. Chemosynthesis respiration
  4. Fermentation 
  5. Plant growth regulators phytohormones 

Biology in human welfare
  1. Food production 
  2. Important varieties 
  3. Role of biofertilizers
  4. Crop diseases and their control 
  5. Biopesticides 
  6. Genetically modified organisms
  7. Bio war
  8. Biopiracy 
  9. Biopatent 
  10. Sustainable agriculture medicinal plants including microbes economic importance of crops.

 TN 12th Syllabus 2023-24 for Zoology

The Tamil Nadu 12th Biology Syllabus 2023-24 for Zoology is below for student reference.

Important Topics for TN 12th Zoology
Units Topics
Human physiology
  1. Nutrition
  2. Bones and joints
  3. Respiration
  4. Chemical coordination
  5. Receptor organs
Microbiology
  1. Introduction
  2. Influence of Louis Pasteur, koch 
  3. Virology genetics
  4. AIDS and its control 
  5. Bacteriology, protozoan microbiology and larval microbiology 
  6. Pathogenicity of microorganisms.
Immunology
  1. Immune system
  2. Innate immunity
  3. Acquired immunity
Genetics
  1. Human genome project
  2. Recombinant DNA technology: cloning, transgenic organisms, genetically modified organisms, gene therapy, bioinformatics, DNA sequencing, protein sequencing, protein structure,database.
Environmental sciences
  1. Human population
  2. Global warming
  3. Ozone layer depletion
  4. Waste management
  5. Biodiversity conservation
  6. Energy crisis 
  7. Environmental impact
  8. Poverty
Biology applications
  1. Livestock and Management
  2. Milch breed
  3. Draught breed
  4. Common diseases and control
  5. Poultry farming
  6. Pisciculture
  7. Urine analysis
  8. CT scan
  9. Artificial pacemaker.

Evolution theories
  1. Lamarkism
  2. Darwinism
  3. Modern concept of natural selection
  4. Species concept
  5. Origin of species
  6. Isolating mechanisms.

Marking Scheme for TN 12th 2023-24 Biology Syllabus

The TN 12th Biology exam is conducted for 150 marks, and students must complete the paper within 3 hours. The biology exam paper is a combination of short, long, and objective questions. The marking scheme for the TN 12th biology exam is given below.

Marking Scheme for TN 12th Biology Syllabus 
Sections Type of Question Total Questions Marks
A Objective 30 30
B Very short 20 45
C Short 12 35
D Long 8 40
Total     150

Also read: TN 12th Exam Pattern 2023-24

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Entrance Exams after 12th Boards

JEE Main

Exam Date: Apr 4, 2024

Result Date: Apr 25, 2024

JEE Advanced

Exam Date: May 26, 2024

Result Date: N/A

BITSAT

Exam Date: May 20, 2024

Result Date: N/A

TNEA

Exam Date: N/A

Result Date: Aug 16, 2022

TANCET

Exam Date: Mar 25, 2023

Result Date: Mar 28, 2024

NEET

Exam Date: May 5, 2024

Result Date: N/A

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