Tamil Nadu Board Class 12 Biology Syllabus

The Tamil Nadu Board of Secondary Education has been striving to provide world-class education in Science. By adopting novel methods such as introducing major scientific developments in the syllabus, the board has set a credible syllabus that puts the students on a path towards a meaningful higher education.

The Tamil Nadu Board Class 12 Biology Syllabus 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.

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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