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Quiz: Energy Flow

TermDefinition
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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