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WorksheetsEcosystem review
Total questions: 29
Worksheet time: 16mins
Name
Class
Date
1.
This is a list of some parts of an ecosystem: star fish, kelp, rocks, salt water.
Which ecosystem would have these parts?
Which ecosystem would have these parts?
a)
a stream
b)
a lake
c)
a tide pool
d)
a river
2.
Which terrestrial ecosystem has warm, humid conditions and a large variety of plants and animals?
a)
estuary
b)
grassland
c)
deciduous forest
d)
tropical rainforest
3.
How would it affect a plant if it were kept in a dark closet?
a)
It would grow big and green
b)
It would have a few leaves
c)
It would not have any leaves.
4.
An energy pyramid shows that less food and energy is available moving from the bottom to the top. Based on this model, where would producers be located on the energy pyramid?
a)
Level 1
b)
Level 2
c)
Level 3
d)
Level 4
5.
Where do decomposers work the fastest to recycle organic material?
a)
in the desert
b)
in the tundra
c)
in the rainforest
d)
in the mountains
6.
Which human action will cause the most harm to a wetland ecosystem?
a)
boat fishing in this area
b)
feeding the ducks in this area
c)
building homes around the area
7.
In what way do bushes benefit from bears eating their berries?
a)
Their seeds are spread around
b)
Other predators are scared away
c)
Nearby ground becomes compacted
d)
Their stems and branches are broken
8.
The seed shown grows on a short plant. The seed is covered by small points that can stick to other objects. Which will most likely transport this seed to a new location?
a)
Flowing water
b)
the pull of gravity
c)
the wind blowing
d)
being carried by an animal
9.
Which best describes what would happen if the wetlands were to dry up?
a)
Fewer amphibian and reptile eggs would develop
b)
Amphibians and reptiles would find another source of prey
c)
Amphibians and reptiles would lay eggs and develop on dry land
10.
How are all ecosystems similar to forest ecosystems?
a)
All have plenty of trees for consumers to eat
b)
All provide nutrient rich soil for producers
c)
All provide diverse populations of small animals that consumers can eat
d)
All have an appropriate amount of sunlight to support the producers living there
11.
Which best describes the role of litter in an ecosystem?
a)
Litter causes landfills to fill up more quickly.
b)
Litter is a pollutant that can harm living things in an ecosystem
c)
Litter provides natural habitats for certain organisms in an ecosystem.
12.
What best describes both marshes and swamps?
a)
Most of the plants in marshes and swamps are trees.
b)
Most of the plants in marshes an swamps are grasses
c)
Most of the plants in marshes are trees. Most of the plants in swamps are grasses.
d)
Most of the plants in marshes are grasses. Most of the plants in swamps are trees.
13.
In a food chain, foxes are consumers of rabbits and mice. If the mice population suddenly decreases, what will most likely happen to the number of foxes?
a)
The number of foxes will increase because they will eat fewer rabbits.
b)
The number of foxes will stay the same because they will more rabbits.
c)
The number of foxes will decrease because they will be eaten by the rabbits.
d)
The number of foxes will decrease because they will only have one remaining food source.
14.
Plants in a forest need to obtain nutrients from the soil to survive. How do most of the nutrients get back in the soil once the forest plants have used them for growth?
a)
Organic matter recycles from dead organisms.
b)
Commercial fertilizers are applied by humans.
c)
Solar radiation reaches the ground surface.
d)
Rainwater drips off of living organisms.
15.
Which is a groups of producers that could be found in a forest?
a)
cacti, shrubs, and yucca
b)
deer, squirrels, and mice
c)
trees, grasses, and vines
d)
lizards, scorpions, and rodents
16.
Fred goes fishing and notices a sign near the lake saying that he must release all the fish back into the water after he catches them. Which explains how this would most likely benefit the ecosystem?
a)
It helps to maintain a balanced food chain.
b)
It supplies more food for aquatic life living in the lake.
c)
It keeps fish available for the next people that come fishing.
17.
Which is a possible result of humans destroying habitats?
a)
An increase in available niches
b)
an increase in the number of prey
c)
an increase in the number of predators
d)
an increase in the number of endangered species
18.
How are consumers generally classified?
a)
by the amount of food they eat
b)
by the size of their tracks
c)
by the type of food they eat
d)
by the way they digest their food
19.
Which term defines animals that obtain food by hunting other animals?
a)
predators
b)
prey
c)
producers
d)
scavengers
20.
The diagram below shows part of a river food web. The amount of algae in a river increases over time. How will this most likely affect this food web?
a)
There will be more trout for the bears to eat
b)
There will be more sculpins for the snails to eat
c)
There will be fewer clams for the raccoons to eat
d)
There will be fewer minnows for the sculpins to eat
21.
Which best describes most estuaries?
a)
They are natural water purification systems.
b)
They provide freshwater for plants and animals.
c)
They are areas that prevent ocean water from coming inland.
d)
They provide soil that has not been affected by pollution.
22.
Which is a benefit of having different types of producers in an ecosystems?
a)
There is more competition for food by consumers.
b)
The ecosystem can support more types of consumers.
c)
There will be more decomposers living in the ecosystem.
d)
The ecosystem will be better able to support carnivores.
23.
Field mice eat corn. Which would most likely happen if the field mouse population grew?
a)
There would be more corn to feed the field mice.
b)
There would be less corn due to the mice eating it.
c)
The habitat would get overpopulated because the mice would eat too much.
24.
Which best explains why the sun is important to all ecosystems?
a)
It provides heat.
b)
It provides daylight.
c)
Producers rely on it to make their food.
25.
What best describes the roles of the organisms listed below in order from left to right?
Rabbit, tree, owl
Rabbit, tree, owl
a)
consumer, producer, consumer
b)
producer, decomposer, consumer
c)
consumer, decomposer, consumer
26.
Which marine ecosystem would be best for organisms that can adapt to both salt water and fresh water?
a)
estuary
b)
lake
c)
pond
d)
river
27.
European starlings are birds that take over the nests of other birds. When they move into an area, starlings reproduce quickly. Taking over the nests of other birds most likely increases the number of starlings by helping them to do what?
a)
attract a better mate
b)
compete for resources
c)
migrate during the winter
d)
blend in with the environment
28.
Which best describes animals that eat only plants?
a)
decomposers
b)
carnivores
c)
herbivores
29.
Why is the presence of insects in a rain forest ecosystem important?
a)
insects store water needed by other animals
b)
insects create energy needed by other animals
c)
insects help keep plant growth under control by eating leaves
d)
insects are a source of food for many organisms living in this ecosystems
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