Vocab 1
Organisms that create their own food through photosynthesis.
Producer
A unit of measure to describe energy.
kcal
Animals that eat plants AND animals.
Omnivore
1st Trophic Level
Producers
How do you calculate the amount of energy that moves through each trophic level?
Multiply the amount of kcal a producer has by 0.1
An organism that eats producers.
Each step in a food chain (described in an energy pyramid).
Trophic Level
Animals that eat just plants.
Herbivore
2nd Trophic Level
Primary Consumer
A producer has 1,000 kcal. How many kcal does the secondary consumer have?
10
An organism that breaks down dead or decaying organisms.
Decomposer
Animals at the top of the food chain who have no natural enemies.
Tertiary Consumer
Animals that eat animals.
Carnivore
3rd Trophic Level
A producer has 2,500 kcal. How many kcal does the tertiary consumer have?
2.5
A model for how energy spreads in an ecosystem.
A system of interlocking and interdependent food chains.
Food Web
A process that uses sunlight to turn carbon dioxide into sugars that the cell can use for energy.
Photosynthesis
4th Trophic Level
Tertiary Consumers
A producer has 5,200 kcal. How many kcal does the primary consumer have?
520
The combined mass of all the organisms.
Biomass
An organism that eats primary consumers.
Secondary Consumers
A series of organisms, each dependent on the next for food.
Food Chain
Only 10% of the energy available at each trophic level moves on to the next level. What happens to the other 90%?
The organisms use it/burn it up.
A producer has 440 kcal. How many kcal does tertiary consumer have?
0.44