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  🌱 Introduction Life processes are essential biological activities that keep living organisms alive. The four major processes are: Nutrition Respiration Transportation Excretion 🍽️ Nutrition Nutrition is the process by which organisms obtain and utilize food. Types of Nutrition Autotrophic Nutrition – Organisms prepare their own food. Photoautotrophic: Plants use sunlight and chlorophyll. Chemoautotrophic: Certain bacteria use chemical energy. Heterotrophic Nutrition – Organisms depend on others for food. Holozoic Nutrition: Ingestion of whole food (Humans, Amoeba). Saprophytic Nutrition: Feeding on dead and decaying matter (Mushrooms, Bread mold). Parasitic Nutrition: Living on or inside another organism without killing it (Tapeworm, Lice, Cuscuta). 📌 Important Example: Cuscuta – a parasitic plant. 🌞 Photosynthesis in Plants Photosynthesis is the process by which plants prepare food using: Sunlight Chlorophyll Carbon dioxide Water Equation: [6CO_2 + 6H_2O → C_6H_{12}O_6 + O_2...