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10 Cards in this Set

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Primary Productivity
The rate at which organic material is produced by photosynthetic organisms in an ecosystem.
Producer
Organisms that capture energy includes:: plants, some bacteria and algae.
Consumer
Organisms that consume plants or other organisms to obtain energy necessary to build their molecules.
Trophic Level
Ecologists assign organisms a specific level based on the organism's source of energy.
Food chain
The path of energy through an ecosystem.
Detrivore
Organisms that obtain their energy from organic waste and dead bodies; worms, fungi and bacteria.
Decomposer
Organisms that release energy back into the environment to be recycled by other organisms.
Food web
A complicated interconnecting group of food chains.
Energy Pyramid
Ecologists often illustrate the flow of energy from one trophic level to another in this method.
Biomass
This is the dry weight of tissue and organic matter found in a specific ecosystem. Average loss is 90% per level.