Trophic Levels
Ecological Pyramids
Potpourri
100
What is a trophic level?
What is a step in a food chain or food web?
100
What do pyramids of energy show?
What is the relative amount of energy available at each trophic level of a food chain or food web?
100
Most humans fall in what type of consumer category?
What are omnivores?
200
What type of organisms make up the first trophic level in any food chain or food web?
What are primary producers?
200
What is shown by a pyramid of numbers?
What is how many organisms are present at each trophic level?
200
In a pyramid of numbers, the number of individuals on each trophic level increases/decreases from the level below it?
What is decreases?
300
A food chain that is five (5) steps in length has how many trophic levels?
What is five (5)?
300
On average, how much energy available in a trophic level is passed on to the next trophic level?
What is 10%?
300
Our ultimate source of energy comes from the?
What is sun?
400
Trophic levels are used in what kind of ecological models?
What are ecological pyramids?
400
The total amount of living tissue within a given trophic level is called?
What is biomass?
400
Phytoplankton is an example of a what?
What is a primary producer?
500
What type of organisms occupy the trophic levels beyond the first one in any food chain or food web?
What are consumers?
500
How are pyramids of numbers and pyramids of biomass similar?
What is in most ecosystems, the shape of the pyramid of numbers is similar to the shape of the pyramid of biomass for the same ecosystem?
500
What is the role of a scavenger, decomposer, and detritivore in a food web?
What is a scavenger consumes dead organisms, a decomposer breaks dead organisms down into detritus, and detritivores consume the detritus?
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