Energy In An Ecosystem Question Preview (ID: 39901)


Ecosystem Test. TEACHERS: click here for quick copy question ID numbers.

Which is not an example of a decomposer?
a) hawk
b) bacteria
c) worms
d) fungi

What do arrows represent in a food web?
a) the energy flow
b) predators
c) prey
d) producers

what is always at the bottom of any food chain?
a) producers
b) consumers
c) cows
d) bacteria

how are producers and consumers alike?
a) they both need energy
b) the both make their own food
c) they both go through photosynthesis
d) they are not alike

what is the decomposer's role in the food chain
a) break down dying and dead matter
b) eat other organisms
c) to produce food for consumers
d) to use the sun's energy

what percentage of energy is lost as you go from one level of the food chain to the other?
a) 90%
b) 50%
c) 20%
d) 100%

which would be considered a Primary consumer?
a) cow
b) bear
c) Miss Piel
d) Orca whale

what is a trophic level?
a) one step on a food pyramid
b) all the consumers in a food web
c) only the plants
d) all fungi and bacteria

where does all the energy in an ecosystem originate?
a) the sun
b) producers
c) top predators
d) consumers

What is at the top of all food chains?
a) the top predator
b) the top prey
c) the fungi
d) the producers

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