Understanding Modes of Nutrition
Understanding Modes of Nutrition
Items in this lesson
Understanding Modes of Nutrition
What do you already know about how living things get their food?
Learning Objective
At the end of the lesson you will be able to describe the two main modes of nutrition, identify examples of autotrophic and heterotrophic organisms, and explain the different types of heterotrophic nutrition.
What Are the Main Modes of Nutrition?
Heterotrophic Nutrition
Autotrophic Nutrition
Organisms get energy from organic compounds by consuming other organisms. Examples: animals, fungi, some bacteria.
Organisms make their own food using energy from sunlight (photosynthesis) or chemicals (chemosynthesis). Examples: plants, algae, some bacteria.
Types of Heterotrophic Nutrition
Holozoic: Animals eat complex food (e.g., humans). Saprophytic: Organisms break down dead material (e.g., fungi). Parasitic: Organisms feed on a host (e.g., tapeworms).
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