Class 9 Biology New Book 2026-27 PDF Download

Download the latest Class 9 Biology New Book 2026-27 PDF with complete chapters, online preview, and free download option. This new biology book includes important topics such as Cell Biology, Biodiversity, Biomolecules, Enzymes, Bioenergetics, Plant Physiology, and Biostatistics.

Students can read the complete Biology textbook online or download the PDF for offline study.

Class 9 Biology Book Chapters

Chapter / Topic	Page No.
Chapter 1: The Science of Biology	1
1.1: Biology and its Branches	2
1.2: Relation of Biology with Other Sciences	4
1.3: Careers in Biology	6
1.4: Quranic Instructions to Reveal the Study of Life	8
1.5: Science as a Collaborative Field	9
1.6: Scientific Method	10
1.7: Theory and Law/Principle	12
1.8: Malaria - An Example of Biological Method	13
Chapter 2: Biodiversity	21
2.1: Biodiversity	21
2.2: Classification	22
2.3: Taxonomic Ranks	23
2.4: History of Classification	25
2.5: Domains of Living Organisms	27
2.6: Classification of Domain Eukarya	29
2.7: Status of Virus in Classification	30
2.8: Binomial Nomenclature	32
Chapter 3: The Cell	37
3.1: Cell	38
3.2: Structure of Cell	38
3.3: Structural Advantages of Plant and Animal Cells	49
3.4: Cell Specialization	50
3.5: Stem Cells	53
Chapter 4: Cell Cycle	59
4.1: Cell Cycle	59
4.2: Mitosis	61
4.3: Meiosis	65
4.4: Comparison between Meiosis and Mitosis	69
Chapter 5: Tissues, Organs, and Organ Systems	75
5.1: Levels of Organization	75
5.2: Organs and Organ Systems in Plants	78
5.3: Organs and Organ Systems in Humans	81
5.4: Homeostasis	83
Chapter 6: Biomolecules	89
6.1: Biomolecules	89
6.2: Carbohydrates	91
6.3: Proteins	94
6.4: Lipids	95
6.5: Nucleic Acids	97
6.6: The Working of DNA and RNA	100
Chapter 7: Enzymes	105
7.1: Metabolism	105
7.2: Enzymes	106
7.3: Mechanism of Enzyme Action	108
7.4: Factors that Affect the Activity of Enzymes	109
7.5: Enzyme Inhibition	111
Chapter 8: Bioenergetics	115
8.1: ATP: The Cell's Energy Currency	116
8.2: Photosynthesis	117
8.3: Cellular Respiration	120
Chapter 9: Plant Physiology	129
9.1: Nutrition in Plants	130
9.2: Transport in Plants	132
9.3: Transpiration	134
9.4: Transport of Water and Salts in Plants	136
9.5: Translocation of Food in Plants	137
9.6: Gaseous Exchange in Plants	138
9.7: Mechanisms for Excretion in Plants	140
9.8: Osmotic Adjustments in Plants	142
Chapter 10: Reproduction in Plants	147
10.1: Types of Asexual Reproduction	147
10.2: Artificial Propagation	152
10.3: Sexual Reproduction in Plants	154
Chapter 11: Biostatistics	163
11.1: Introduction of Biostatistics	163
11.2: Mean, Median, and Mode	165
11.3: Bar Chart	167
Glossary	173

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