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- 1. Multiple Choice
Which would most likely happen if all the soil in an ecosystem washed
away?
Most of the plants would die.
Most of the plants would grow in rocks.
All animals would become carnivores.
All animals and plants would relocate.
- 2. Multiple Choice
Which would be most directly affected by a reduction in nutrients in the
soil?
sunlight
abiotic factors
sunlight
- 3. Multiple Choice
Which best describes what would happen if the wetlands were to dry up?
Fewer amphibian and reptile eggs would develop.
Amphibians and reptiles would find another source of prey.
Amphibians and reptiles would lay eggs and develop on dry land.
- 4. Multiple Choice
Which ecosystem contains the largest mammals?
ocean
pond
river
river
- 5. Multiple Choice
Which best describes the role of a first-level consumer in an ecosystem?
Consumers eat producers and pass the energy along in an ecosystem.
Consumers eat scavengers and pass the energy along in an ecosystem.
Consumers eat decomposers and pass the energy along in an
ecosystem.
Consumers eat other consumers and pass the energy along in an
ecosystem.
- 6. Multiple Choice
Which statement best describes what an ocean and a pond have in common?
They are both ecosystems that rely on each other for survival.
They are both ecosystems that support human and animal life.
They are both ecosystems that support plants, animals, and
microorganisms.
They are both ecosystems that support the same types of plants,
animals, and microorganisms.
- 7. Multiple Choice
In a grassland ecosystem, lions prey on wildebeest. The population of lions has declined steadily because of illegal hunting. What will most likely happen to the population of wildebeest?
The wildebeest population will increase.
The wildebeest population will decrease.
The wildebeest population will remain the same.
- 8. Multiple Choice
What would MOST likely happen to this food chain if a farmer decides to dust a wheat crop
with an insecticide? Wheat---insects---sparrows---hawks
The wheat would become greener.
Other birds would move into the fields.
The hawks would start eating the wheat.
There would be fewer sparrows in the fields.
- 9. Multiple Choice
Which pair of organisms benefits each other the MOST?
birds building a nest in a bush
worms eating the roots of a plant
squirrels burying seeds from a tree
deer scraping their antlers on a tree
- 10. Multiple Choice
Which would most likely happen to organisms in an ecosystem if the temperature suddenly increased for an extended period of time?
Some organisms would not survive.
All of the organisms will move to nearby ecosystems.
Many of the organisms will quickly adapt to the resulting climate
change.
None of the organisms would be able to adapt to the resulting
climate change.
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