Tamil Nadu Board Class 12 Biology Syllabus 2022-23| Get Samacheer Kalvi Class 12 Biology Syllabus PDF

The TN Board creates the Tamil Nadu Class 12 Syllabus for Biology. By adopting novel methods such as introducing major scientific developments in the Samacheer Kalvi Tamil Nadu State Board Class 12 Biology syllabus, the board has set a credible syllabus that puts the students on a path towards a meaningful higher education. Any student who wishes to score well in the TN Board Class 12 exams need to know the Tamil Nadu Board Class 12 Biology Syllabus thoroughly. This will help them to plan their studies and prepare for the exams more effectively.

Samacheer Kalvi Tamil Nadu Board 12th Class Biology Syllabus 2022-23

The TN Board Syllabus for Class 12 Biology has all the required components for a great foundation before the students can choose engineering, medical, or other academic courses. The board has adopted a future focus curriculum so that the topics are included in the syllabus before they are in demand in the industry.

Biology subjects lose their meaning if experiments and practicals don’t go hand in hand with theory classes. To this extent, the TN board has included a right mix of practicals in the syllabus so the students can also gain application perspective. Read on to find the Tamil Nadu Board Class 12 Biology Syllabus.

Bio-Botany Syllabus:


Taxonomy of Angiosperms
Plant anatomy
Cell biology and genetics Chromosomes
Plant physiology
Biology in human welfare



To dissect and describe the floral parts of the given parts in the following families.

  • Malvaceae
  • Solanaceae
  • Euphorbiaceae
  • Musaceae

To identify and write notes on the following slides

  • T.S. of dicot stem
  • T.S. of dicot root
  • T.S. of monocot stem
  • T.S. of monocot root
  • T.S. of dicot leaf
Cell biology and genetics

  • To describe the model of DNA / photograph of DNA.
  • To describe the types of RNA as seen in photograph
  • To describe callus / plantlets in tissue culture (real specimens or photographs)
Plant physiology

To describe the experimental setup on the following topics:

  • Photosynthesis
  • Respiration
  • Osmosis
  • Transpiration
Economic importance of plants

To identify and describe plants as prescribed in the syllabus.

Bio-Zoology Syllabus:


Human physiology
Modern genetics
Environmental science
Applied biology
Theories of evolution


Qualitative test for carbohydrates, proteins and lipids – 1 test each
Test of urea in urine of a mammal
Rate of activity of human salivary amylase in relation to temperature
Study of prepared slides – Entamoeba, Scolex of tapeworm, mature proglottis, Red blood corpuscles, white blood corpuscles
Models and specimens – Mammalian Brain / model, Eye model, Ear model, Mammalian Kidney – Nephron model, Heart model
Instruments / Drugs

  • Stethescope
  • Sphygmomonometer
  • An eye drop bottle having antibiotic fluid
  • Eye lotion
  • Bifocal eye lens
Project Report (minimum two)

  • Visit to Medical Laboratory or Hospital or Research Laboratory
  • Visit to a Dairy or Poultry or Fish farm
  • Visit to a site havintg rain water harvesting

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