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- 1. Multiple Choice
Dylan drew a diagram showing that certain organisms eat other organisms. The diagram included a caption stating that the amount of available energy decreases with each organism that is eaten. How is this explained by the law of conservation of energy?
Living things change energy into matter.
Some of the energy is used for life processes.
Some energy disappears when living things are eaten.
Only small amounts of energy can be destroyed at a time.
- 2. Multiple Choice
Which of the following is the name given to organisms that make their own food?
autotrophs
heterotrophs
decomposers
omnivores
- 3. Multiple Choice
What do the arrows in the food chain indicate about the flow of energy in an ecosystem?
Energy is continuously recycled by the organisms in an ecosystem.
Energy flows in one direction in an ecosystem, from producers to consumers.
More of the available energy in an ecosystem is given to large animals than to small animals.
Organisms at the end of the food chain receive more energy than those at the beginning.
- 4. Multiple Choice
In this energy pyramid, which organism would most likely be in level 2?
bird
fox
caterpillar
tree
- 5. Multiple Choice
How would the removal of earthworms from the food chain affect the other organisms?
The number of bass will increase.
The number of crayfish will decrease.
The crayfish will get their energy directly from the sun.
The number of bass and ospreys (bird) will increase.
- 6. Multiple Choice
Interactions in an ecosystem result from the transfer of matter and energy from producers to consumers and eventually decomposers. What are the forms of energy transfer from numbers 1 through 4?
Chemical energy to chemical energy
Light energy to chemical energy
Chemical energy to heat energy
Heat energy to mechanical energy
- 7. Multiple Choice
Suppose that a new predator of the rabbit migrated to this ecosystem. What is the most likely initial effect on the other organisms?
More competition among the mice for food
More competition among the hawks for food
Less competition among snakes for food
Less grass available for food
- 8. Multiple Choice
The picture shows an energy pyramid. What will most likely happen to the foxes and the wolves if the rabbits are removed?
The foxes will eat more wolves.
The foxes will eat fewer wolves.
There will be more foxes and wolves.
There will be fewer foxes and wolves.
- 9. Multiple Choice
A student examines the information in the table. The student concludes that Organism W should be placed at the base of the food web to represent the feeding relationships in the marine ecosystem. However, the student later learns that Organism W's cells do not contain chloroplasts. Based on the new information, which conclusion would be appropriate?
Another organism in the marine ecosystem is a producer.
Organism W is a secondary consumer in the marine ecosystem.
The role of Organism T in the marine ecosystem changes during its life.
This marine ecosystem does not have any producers.
- 10. Multiple Choice
The diagram provided shows a simple food web. Which group of organisms is not represented in the diagram?
prey
decomposers
consumers
producers
- 11. Multiple ChoiceWhat does a food web represent?All connections of energy flow throughout all organisms in a habitat.The specific ways that mutualism is carried out.A single pathway or energy flow between organisms.How carnivores get their food.
- 12. Multiple ChoiceHow many primary consumers are in this food web?1234
- 13. Multiple ChoiceIf the grasshopper were to be removed completely from the food web, what organism would be most effected?The squirrelThe shrewThe deerThe rabbit
- 14. Multiple Choice
If there is 1,000 Kcal available in the producers trophic level, how much energy is available for the primary (1st) consumers?
10 Kcal
1 Kcal
100 Kcal
1,000 Kcal
- 15. Multiple Choice
What restricts the length of a food chain?
Energy losses between the trophic levels
A greater biomass at the higher trophic levels
The number of species in the food web
The consumption of waste by detritivores
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