Tamil Nadu (TNBSE)Class 12Subject library

Tamil Nadu (TNBSE) Class 12 Bio-Botany

Chapter-wise notes, previous year papers, sample papers and Q&A for Tamil Nadu (TNBSE) Class 12 bio-botany — free, syllabus-aligned, exam-ready.

10 chapters~300 min read totalFree · printable

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Chapters

10 chapters — sequenced for revision and exam prep.

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Asexual and Sexual Reproduction in Plants

Samacheer Kalvi (TN State Board) Class 12 Bio-Botany — Chapter 1, Asexual and Sexual Reproduction in Plants. Vegetative propagation, pollination, fertilisation and apomixis. Study notes, key concepts, worked examples, practice questions and quick revision for exam preparation.

Tamil Nadu State Board⏱ 30 minRead chapter

Classical Genetics

Samacheer Kalvi (TN State Board) Class 12 Bio-Botany — Chapter 2, Classical Genetics. Mendel's laws, deviations and extensions of Mendelism. Study notes, key concepts, worked examples, practice questions and quick revision for exam preparation.

Tamil Nadu State Board⏱ 30 minRead chapter

Chromosomal Basis of Inheritance

Samacheer Kalvi (TN State Board) Class 12 Bio-Botany — Chapter 3, Chromosomal Basis of Inheritance. Linkage, crossing over, chromosome maps and sex determination. Study notes, key concepts, worked examples, practice questions and quick revision for exam preparation.

Tamil Nadu State Board⏱ 30 minRead chapter

Principles and Processes of Biotechnology

Samacheer Kalvi (TN State Board) Class 12 Bio-Botany — Chapter 4, Principles and Processes of Biotechnology. Tools of genetic engineering and recombinant DNA technology. Study notes, key concepts, worked examples, practice questions and quick revision for exam preparation.

Tamil Nadu State Board⏱ 30 minRead chapter

Plant Tissue Culture

Samacheer Kalvi (TN State Board) Class 12 Bio-Botany — Chapter 5, Plant Tissue Culture. Callus, somatic embryogenesis, micropropagation and applications. Study notes, key concepts, worked examples, practice questions and quick revision for exam preparation.

Tamil Nadu State Board⏱ 30 minRead chapter

Principles of Ecology

Samacheer Kalvi (TN State Board) Class 12 Bio-Botany — Chapter 6, Principles of Ecology. Ecology levels, biotic and abiotic factors and ecological adaptations. Study notes, key concepts, worked examples, practice questions and quick revision for exam preparation.

Tamil Nadu State Board⏱ 30 minRead chapter

Ecosystem

Samacheer Kalvi (TN State Board) Class 12 Bio-Botany — Chapter 7, Ecosystem. Structure, productivity, food webs, energy flow and nutrient cycling. Study notes, key concepts, worked examples, practice questions and quick revision for exam preparation.

Tamil Nadu State Board⏱ 30 minRead chapter

Environmental Issues

Samacheer Kalvi (TN State Board) Class 12 Bio-Botany — Chapter 8, Environmental Issues. Pollution, deforestation, global warming, ozone depletion and conservation. Study notes, key concepts, worked examples, practice questions and quick revision for exam preparation.

Tamil Nadu State Board⏱ 30 minRead chapter

Plant Breeding

Samacheer Kalvi (TN State Board) Class 12 Bio-Botany — Chapter 9, Plant Breeding. Hybridisation, mutation breeding, polyploidy and GM crops. Study notes, key concepts, worked examples, practice questions and quick revision for exam preparation.

Tamil Nadu State Board⏱ 30 minRead chapter

Economically Useful Plants and Entrepreneurial Botany

Samacheer Kalvi (TN State Board) Class 12 Bio-Botany — Chapter 10, Economically Useful Plants and Entrepreneurial Botany. Medicinal, food, fibre, timber and industrial plants. Study notes, key concepts, worked examples, practice questions and quick revision for exam preparation.

Tamil Nadu State Board⏱ 30 minRead chapter