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Energy Flow
Sun Light
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What % of the sun’s energy is used by living things? _______________________________
What happens to the rest of the sun’s energy? _____________________________________________
Producers / Autotrophs
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Producers use sun light or chemical compounds to synthesize their own food.
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Use energy from the environment to fuel the assembly of simple inorganic compounds into complex
organic molecules.
What is the difference between organic and inorganic compounds? ___________________________
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These organic molecules combine to produce living tissue.
Main Autotrophs
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Photosynthesis
Briefly explain what happens during photosynthesis. __________________________________________
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Chemosynthesis
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Some organisms can produce their own energy by converting energy from inorganic chemicals to
organic compounds.
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This is called ____________________________________________.
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Chemosynthesis is performed by __________________________________________________
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These bacteria make up a large portion of _____________________________
Consumers/Heterotrophs
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Many diff types of heterotrophs.
1. Herbivores – _________________________________________
2. Carnivores – _________________________________________
3. Omnivores – _________________________________________
4. Detritivores – ________________________________________
5. Decomposers – _______________________________________
Feeding Relationships
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Energy flows from the sun or inorganic compounds to autotrophs and then to various heterotrophs.
Food Chains
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A food chain is _________________________________________________________________
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Food Web
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Trophic Level
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Each step in a food chain or a food web is called a trophic level.
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Why are there rarely more than 4 or 5 levels? _____________________________________________
Ecological Pyramids
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Diagrams that show the relative amounts of energy or matter contained within each trophic level.
Energy Pyramid
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Energy pyramid- shows the relative amount of energy available at each trophic level.
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Only about ____________________ of the energy available within one trophic level is transferred to
organisms at the next trophic level.
Biomass Pyramid
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Expressed as grams per unit area.
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The greatest biomass is __________________________________________________________
Pyramid of numbers
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