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- 1. Multiple Choice
The table lists some organisms found in a swamp ecosystem and their sources of energy.
When constructing an energy pyramid of the swamp ecosystem, which of these would be placed at the top of the pyramid?
Grass carp
American alligator
Eastern mud turtle
Great blue heron
- 2. Multiple Choice
A partial meadow food web is shown.
Based on this food web, which organisms are direct sources of energy for secondary consumers?
Aphid
Bird
Rabbit
Ladybug
Fox
Dragonfly
Frog
Butterfly
Berries
Mouse
Snake
Hawk
- 3. Multiple Choice
The energy pyramid below shows the energy made available by producers.
Based on the energy flow between trophic levels in an energy pyramid, how much energy would be expected to be found at the secondary consumer level in this pyramid?
100 joules
500 joules
1,000 joules
50 joules
- 4. Multiple Choice
The amount of energy the producers in this energy pyramid provide the primary consumer is 54,000 joules. From this amount, 540 joules are provided to the tertiary consumers. Based on this model, how much of the energy was provided to secondary consumers?
53,460 J
5,400 J
540 J
54 J
- 5. Multiple Choice
Food webs such as the one shown were first used in 1927 by the animal ecologist Charles Elton. The food web below represents the feeding relationships among organisms in an Alaskan ecosystem. An environmental change that removed which of these organisms from the ecosystem would cause the most instability in the ecosystem?
Auklets
Foxes
Salmon
Zooplankton
- 6. Multiple Choice
The food web shows the flow of energy through a sagebrush-steppe ecosystem. Which of these organisms are in a trophic level that receives a larger percentage of the energy captured by the producers than the percentage received at the bats’ trophic level?
mountain lions
snakes
hawks
ground squirrels
- 7. Multiple ChoiceWhich of the following are missing from the food web shown above?producersdecomposersomnivorescarnivores
- 8. Multiple ChoiceMost food chains have no more that 5 levels. Why is this?They run out of energy.False statement. Most food chains have 6-8 levels.
- 9. Multiple ChoiceIn a food chain or energy pyramid, there are different feeding levels (producer, primary consumer...). What do we call these feeding steps?communitieslevels of energytrophic levelsfood web
- 10. Multiple ChoiceWhich organisms in the food chain have the least available energy?large fishalgaesharksmall fish
- Answer choicesTagsAnswer choicesTags