This Grade 9 Biology Guide is developed in accordance with the Lebanese national curriculum, providing students with a solid foundation in biological concepts while preparing them for middle school assessments and the transition to secondary education.
The guide covers all major Grade 9 biology topics, including cell structure and function, classification of living organisms, ecosystems and the environment, photosynthesis and respiration, human body systems, reproduction, health, and disease. Concepts are presented in a clear, structured, and student-friendly manner, making complex ideas easier to understand.














