📘 Part 1: Chapters 1-3 (Introduction to Biology, Biodiversity, The Cell)
Explore Chapters 1-3 from the Class 9 Biology textbook (PTB/PECTAA 2025). Chapter 1: Introduction to Biology covers the definition of biology, its branches, biological methods, and significance. Chapter 2: Biodiversity focuses on classification, biodiversity in Pakistan, and conservation. Chapter 3: The Cell dives into cell structure, organelles, and differences between plant and animal cells.
📁 Part 1: Chapters 1-3
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📖 Part 1: Ch 1-3 | Part 2: Ch 4-6 | Part 3: Ch 7-11
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