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Knowledge
Nutrition encompasses the processes through which organisms obtain food necessary for energy, growth, and repair. It includes two primary types: autotrophic, where organisms synthesize their own food using inorganic materials and sunlight, and heterotrophic, where organisms rely on others for sustenance. The human digestive system plays a crucial role in breaking down food for nutrient absorption, vital for overall health and bodily functions.
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b9-10.pdfClass Notes
Memorization
What we have learnt
- Nutrition is essential for ...
- There are two main types of...
- The human digestive system ...
Final Test
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What we have learnt
- Nutrition is essential for energy, growth, and repair in organisms.
- There are two main types of nutrition: autotrophic and heterotrophic.
- The human digestive system consists of several organs that work together to break down food and absorb nutrients.
Key Concepts
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Term: Autotrophic Nutrition
Definition: A type of nutrition where organisms, like green plants, synthesize their own food using sunlight, carbon dioxide, and water through the process of photosynthesis.
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Term: Heterotrophic Nutrition
Definition: A type of nutrition where organisms depend on others for food. This includes holozoic (ingestion and digestion), saprophytic (feeding on dead matter), and parasitic (feeding on living hosts) nutrition.
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Term: Photosynthesis
Definition: The process by which plants and some other organisms use sunlight to synthesize foods with the help of chlorophyll in chloroplasts.
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Term: Human Digestive System
Definition: The complex system which facilitates the digestion and absorption of food, comprising the mouth, esophagus, stomach, small intestine, and large intestine.