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Life processes, , * Constantly exhibit the functions of, maintenance and repair in living organisms, , + Some Examples- Digestion, Respiration,, Circulation etc., , Nutrition, , + Process of obtaining nutrients from the, environment i.e. intake of food and then its, digestion in the body., , * Two types — Autotrophic (self-sufficient, for food) and Heterotrophic (dependent on, others for food)., , Autotrophic nutrition, , + Synthesis of food by photosynthesis‘photo’ means light and ‘synthesis’ means, production. It is the production of food with, the help of sunlight., , «Photosynthesis equation6CO+6H20 give Cg6H;20,6+602, + Events of photosynthesis are as follows:, , Absorption of light energy chlorophyll which, is the green pigment and gives energy for, activation of reaction. Then the splitting of, water into its constituent’s hydrogen and, oxygen leading to the Synthesis of ATP and, NADPH) and finally reduction of CO, to, carbohydrates., Heterotrophic nutrition, , * Generally take up energy from plants and, animals by using them as food., , + Mostly of three types—holozoic,, parasitic, and saprophytic., , * Digestion- mechanical and chemical