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- 1. Multiple Choice
What might happen if you remove a primary consumer from the ecosystem?There would be more food for secondary consumers.
The number of primary consumers would increase.
The number of plants would increase.
The number of secondary consumers would increase.
- 2. Drag and Drop
All energy on Earth ultimately comes from what source? (a)
WaterSunConsumersOxygen - 3. Multiple ChoiceAn organism that needs to eat other organisms to obtain energy is known as a:AutotrophProducerConsumerMutualist
- 4. Multiple ChoiceAn organism that uses sunlight to create its own food is known as a:ProducerHeterotrophConsumerDecomposer
- 5. Multiple ChoiceWhich organism do the owl and the weasel compete for in the food web?HawkSpiderGrasshopperShrew
- 6. Multiple Choice
Which of the following is a food chain in the food web?
Rabbit, mountain lion, fox
Grass, grasshopper, frog, snake, hawk
Grass, caterpillar, robin, mountain lion
Tree, deer, mountain lion, fox
- 7. Multiple Choice
Which of the following is defined as a consumer that must get its food from a different source than itself?
Producer
Heterotroph
Autotroph
Homotroph
- 8. Multiple Choice
What is the purpose of a decomposer?
To break down dead materials and waste from consumers
Eat living organisms
Perform photosynthesis to make carbohydrates
Make carbohydrates using chemical energy.
- 9. Multiple Choice
A food web is a single linear path showing the flow of energy from one organism to another. It is not an interconnected relationship diagram of organisms in a community.
TRUE
FALSE
- 10. Match
Match the following:
Bird
Producer/Autotroph
Owl
Secondary Consumer
Plant
Tertiary Consumer
Snake
Top Predator
Grasshopper
Herbivore
- 11. Multiple ChoiceAn organism that lives by breaking apart dead organic matter into simpler parts is...scavengerconsumerdecomposercarnivore
- 12. Multiple ChoiceIn a food web, arrows point at:who gets energy.who gets eaten.
- 13. Multiple ChoiceWhat does a food web represent?All connections of energy flow throughout all organisms in a ecosystem.The specific ways that mutualism is carried out.A single pathway or energy flow between organisms.How carnivores get their food.
- 14. Multiple ChoiceWhat percentage of energy is passed on to each trophic level?10%50%90%100%
- 15. Multiple Choice
Why is some energy not passed on to the next trophic level?
The organisms at each level use about 90% of the available energy to live.
The statement is NOT true. All energy IS passed from one trophic level to the next.
The organisms at each level use about 10% of the available energy to live.
Most energy is absorbed by the soil instead.
- 16. Multiple Choice
Only 10% of the energy is passed on from one trophic level to the next. 90% is lost as heat due to cellular respiration or waste.
Tertiary Consumer
Biotic Factor
Abiotic Factor
10% Rule
- 17. Multiple ChoiceIf there is 1000 Kcal available in the producers in trophic level 1, how much energy is available in the herbivores in trophic level 2?10 Kcal1 Kcal100 Kcal1000 Kcal
- 18. Multiple Choice
Which is a SECONDARY CONSUMER in this food web?
Snake
Mouse
Grass
Wildflowers
- 19. Multiple ChoiceWhich of the following would be the most likely effect, if there were a sudden increase in the cricket population?There would be a decrease in the small bird population.There would be a decrease in the grass/flowers population.There would be a decrease in the mice population.There would be an increase in the grass/flowers population.
- 20. Multiple Choice
Using the food web pictured, how many trophic levels does this energy pyramid have ?
5
6
3
4
- Answer choicesTagsAnswer choicesTags