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Quiz: Energy Flow
| Term | Definition |
|---|---|
| Ecosystem | -In any ecosystem, there are a network of relationships & interactions taking place b/w organisms & the environment. |
| Energy | -Flows through an ecosystem. -The sun is the source of all energy. |
| Food Webs & Food Chains | -Describes the flow of energy. |
| Abiotic Elements | -Important abiotic elements are often recycled in an ecosystem. |
| Metabolism | -(Photosynthesis, digestion, respiration, etc.) requires energy. |
| Organisms and Energy | -Organisms must obtain energy in order to do metabolism and stay alive. |
| Producers, consumers and decomposers | -Terms which describe how an organism obtains its food. -Food chains describe these relationships. |
| Energy Loss | -Energy is NOT recycled but is LOST as organisms interact with one another. |
| Producers | -Make their own energy, they turn energy from the sun into glucose. -Glucose is used for plant's metabolism. -This is called autotrophs |
| Consumers | -Obtain their energy, they get their energy from other organisms. |
| Herbivores - Primary Consumers | -Consume or eat producers only. |
| Carnivores - Secondary Consumers | -Consume or eat other animals only. |
| Omnivores - Tertiary Consumers | -Consume or eat producers and/or other consumers -Eat pretty much everything. |
| Food Chain | -Relationships b/w organisms is called a food chain. -Feeding levels in food chain are called Trophic Levels. -Energy is lost as we move up the food chain. -10% Rule -- For metabolism |
| How much energy is lost? | -10% -As you move up the food chain you only take 10% with you. |
| Describing Consumers | -Consumers often described by trophic levels. -Higher level consumers have less energy available to them. |
| 10% Rule | -Energy is "spent" at each level in food chain...metabolism. -Most energy from food goes to metabolism. --Moving, digesting, growing, reproducing, -Only about 10% goes to tissue that can be eaten. |
| Food Web | -Food webs describe many food chains. -Organisms are interconnected. -Energy is lost as it moves up the trophic levels. |
| Decomposers - Detritivores | -Break down organisms & wastes (recycling) |
| Keystone Species | -An important organism "linked" to many other organisms in an ecosystem. -If they are missing whole ecosystem is negatively affected. |
| Productivity of Ecosystems | -Some ecosystems have abiotic factors more favorable for living things. -Productivity starts with Plants (photosynthesis). |
| Biome Productivity | -Primary productivity measures how much energy producers can acquire from sun. -1% of Sun's energy is used for photosynthesis. |
| Measuring Productivity | -Biomass pyramid -- measures how much living tissue is present. -Pyramid of Numbers -- measures of individual organisms present in an ecosystem. |
| Bioaccumulation | -The accumulation of substances, such as pesticides, or other chemicals in an organism. -Concentrations get higher at each trophic level. |
Created by:
Sturgeon42659
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