Name: 
 

Ecosystems


Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 1. 
What word describes the mammals, fish, birds, and plants that live in an environment?
a.
abiotic
c.
the biosphere
b.
the population
d.
biotic
 

 2. 
Which of the following is abiotic?
a.
a snake
c.
grass
b.
an alligator
d.
water
 

 3. 
Organisms that can make their own food from sunlight are called
a.
decomposers.
c.
producers.
b.
consumers.
d.
carnivores.
 

 4. 
Grass is eaten by a prairie dog. The prairie dog is eaten by a coyote. This is an example of
a.
an abiotic element.
c.
a herbivore.
b.
an omnivore.
d.
a food chain.
 

 5. 
One food web arrow goes from a prairie dog to a coyote, showing that
a.
the coyote is bigger.
c.
the prairie dog eats the coyote.
b.
the coyote eats the prairie dog.
d.
the prairie dog is a producer.
 

 6. 
A bird eats a worm. Who is the predator?
a.
the worm
c.
both the bird and the worm
b.
the bird
d.
neither the bird nor the worm
 

 7. 
Rocks, temperature, and water are what part of the environment?
a.
biotic
c.
population
b.
abiotic
d.
living
 

 8. 
Grass that gains energy from the sun is an example of a
a.
consumer.
c.
decomposer.
b.
parasite.
d.
producer.
 

 9. 
A diagram with arrows showing energy flow from grass, to a rabbit, to a fox is
a.
an energy pyramid.
c.
a food chain.
b.
a food web.
d.
a population chart.
 

 10. 
In a food web, arrows point in just one direction because they show
a.
which animal is bigger.
b.
which animals are related.
c.
how energy goes to the animal that is eating.
d.
how energy goes to the animal that is eaten.
 

 11. 
Two members of the same species fight over who gets a certain food. Members of different species try to take over a certain nesting area. These are both examples of
a.
community.
c.
mutualism.
b.
competition.
d.
commensalism.
 

 12. 
In which type of symbiosis do organisms help each other?
a.
parasitism
c.
community
b.
mutualism
d.
commensalism
 

 13. 
Herbivores, carnivores, and omnivores are all
a.
decomposers.
c.
predators.
b.
producers.
d.
consumers.
 

 14. 
Animals that eat a variety of meats, fruits, and vegetables are
a.
producers.
c.
omnivores.
b.
carnivores.
d.
herbivores.
 

 15. 
Rocks, temperature, and water are what kind of things?
a.
biotic
c.
population
b.
abiotic
d.
living
 

 16. 
What living things make food from sunlight?
a.
consumers
c.
decomposers
b.
parasites
d.
producers
 

 17. 
What is an animal that catches and eats another animal called?
a.
prey
c.
producer
b.
predator
d.
herbivore
 

 18. 
What kind of elk do wolves kill?
a.
the strong and healthy
c.
the old, injured, and diseased
b.
the smart and quick
d.
the energetic and fast
 

 19. 
Bears eat fruits such as berries and animals such as fish. They hibernate in the winter. They give birth to live young. Which of these terms applies to bears?
a.
They are decomposers.
b.
They are at the bottom of the energy pyramid.
c.
They have a mutualistic relationship with berries.
d.
They are consumers.
 

 20. 
If you made a chart showing all the organisms living in the local lake, with arrows drawn between the various organisms showing who ate what, what kind of chart would you have made?
a.
energy pyramid
c.
food web
b.
food chain
d.
ecosystem chart
 

 21. 
Suppose there were a bird that always sat on a horse's back and ate the insects that would bite the horse. What would this be an example of?
a.
mutualism
c.
competition
b.
parasitism
d.
commensalism
 

 22. 
When a parasitic worm invades an animal, who is the host?
a.
the producer
c.
the decomposer
b.
the animal
d.
the worm
 
 
Use the image below to answer the following questions.

nar001-1.jpg
 

 23. 
The arrows on the food web show that
a.
prairie dogs eat grass and grasshoppers.
c.
squirrels eat grass.
b.
deer eat prairie dogs.
d.
squirrels eat coyotes.
 

 24. 
Three organisms on the food web have arrows pointing away from them and no arrows pointing toward them. They are
a.
omnivores.
c.
decomposers.
b.
herbivores.
d.
producers.
 

 25. 
Three organisms on the food web have arrows pointing toward them but no arrows pointing away from them. This is because
a.
they make their own food.
c.
nothing shown eats them.
b.
they give energy to others.
d.
they need no energy.
 

 26. 
What does the arrow between the squirrel and the hawk represent?
a.
energy flowing from producers to consumers
b.
energy flowing from consumers to producers
c.
energy flowing from the squirrel to the hawk
d.
energy flowing from the hawk to the squirrel
 

 27. 
Which of the following statements about savannas( grasslands) is true?
a.
During the wet season, savannas receive little rain.
b.
Savanna inhabitants include some of the largest land herbivores on Earth.
c.
Savannas are characterized by steep mountains.
d.
Savannas are rainy year-round.
 

 28. 
The most  biome with the greatest variety of plants and animals is the
a.
desert
c.
temperate grassland.
b.
tundra.
d.
tropical rain forest.
 

 29. 
Which biome is found near the equator ?
a.
tundra
c.
tropical rainforest
b.
desert
d.
taiga
 

 30. 
Which biome would recieve the most snowfall ?
a.
desert
c.
rainforest
b.
tundra
d.
decidous forest
 

 31. 
Which Biome would recieve the least rainfall ?
a.
tropical rainforest
c.
grasslands
b.
temperate rainforest
d.
decidious forest
 

 32. 
Which biome has few trees ?
a.
desert
c.
tundra
b.
grasslands
d.
All of the above
 

 33. 
Which biome has the lowest yearly temperature ?
a.
taiga
c.
Grasslands
b.
deciduous
d.
rainforests
 

 34. 
Tennessee, Northern Georgia, and Virginia would be found in which Biome ?
a.
rainforest
c.
decidious forest
b.
tundra
d.
desert
 

 35. 
Arizona,and New Mexico is which type of Biome ?
a.
grasslands
c.
desert
b.
rainforest
 



 
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