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WorksheetsEcosystems Review 2
Total questions: 25
Worksheet time: 17mins
Name
Class
Date
1.
Pine trees are the most common type of tree in some parts of Everglades National Park. When forest fires burn an area, pine trees can survive because of their tough bark. Which is the most likely reason fires can help pine tree populations survive?
a)
Fire increases photosynthesis in pine trees.
b)
Fire reduces water needed by the pine trees.
c)
Fire increases the growth of grasses that protect the pine trees.
d)
Fire reduces the populations of other trees that compete with pine trees.
2.
Pesticides are used by farmers to control insects. Sometimes, the pesticides run off into streams.This is an example of
a)
farmers working to protect the environment.
b)
natural substances being used to solve problems.
c)
farmers trying to decrease the amount of crops
d)
the solution for one problem creating another problem.
3.
Polar bears usually stand on floating ice when they hunt. How would warmer temperatures affect polar bears?
a)
There would be more ice. So, hunting would be easier.
b)
There would be less ice. So, hunting would be easier.
c)
There would be more ice. So, hunting would be harder.
d)
There would be less ice. So, hunting would be harder.
4.
Karina moved into a house in a forest. When she first moved in, Karina would often see red foxes. As new houses were built, fewer and fewer foxes were seen. What is the most likely reason the number of foxes decreased?
a)
The fox habitat was destroyed.
b)
People kept the foxes as pets
c)
Predators moved into the area.
d)
Cutting down trees reduced oxygen.
5.
A pond is near a river but not connected to it. What would most likely allow fish to move from the pond to the river?
a)
a fire
b)
a drought
c)
a snowstorm
d)
a flood
6.
Which animals would most likely be helped by flood in a coastal area?
a)
deer
b)
alligator
c)
raccoon
d)
coyote
7.
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.
8.
Which is true of a tropical rainforest?
a)
They are found only in South America.
b)
Only a few different species of plants and animals can be found there.
c)
The tree canopy causes only a small amount of sunlight to reach the ground.
d)
Each organism found in a rainforest can also be found in a deciduous forest.
9.
Which best explains why tropical rainforests always have warm temperatures?
a)
They are at low altitudes.
b)
They are near the Equator.
c)
A canopy of trees traps heat.
d)
The many animals produce heat.
10.
Ospreys are birds that eat fish. Where would an osprey most likely live?
a)
near a forest
b)
near a marsh
c)
near a desert
d)
near a prairie
11.
Which type of ecosystem can be found in the mountain region of North Carolina?
a)
estuary
b)
grassland
c)
deciduous forest
d)
tropical forest
12.
Which ecosystem receives the least amount of precipitation?
a)
estuary
b)
grassland
c)
tropical rain forest
d)
deciduous forest
13.
Which is a difference between the plant life of a rainforest and a deciduous forest?
a)
The deciduous forest has a warm climate year-round, while the rainforest has hot and cold extreme climates.
b)
The deciduous forest has the most diverse plant life of all ecosystems, while the rainforest plant life is scarce.
c)
The deciduous forest remains hot and wet year-round, while the rainforest has a yearly cycle of plant growth due to changes of seasons.
d)
The deciduous forest has yearly cycles of plant growth due to changes of seasons, while the rainforest remains hot and wet year-round.
14.
Which are the most common ecosystems in North Carolina?
a)
estuary, grassland, rainforest
b)
deciduous forest, estuary, ocean
c)
grassland, ocean, tundra
d)
deciduous forest, ocean, desert
15.
Which ecosystem contains the largest mammals?
a)
ocean
b)
pond
c)
river
d)
swamp
16.
Which of these ecosystems supports the widest variety of plants and animals?
a)
desert
b)
estuary
c)
grassland
d)
deciduous forest
17.
Which could be a challenge for a small animal living in a grassland ecosystem?
a)
The frozen ground is too hard to serve as shelter.
b)
The flat terrain makes it easy for predators to spot prey.
c)
The extreme temperatures require thick skin and heavy fur.
d)
The high amounts of precipitation create excess water resources.
18.
Bacteria are released into the Gulf of Mexico to help clean up an oil spill. What role do the bacteria serve in the marine ecosystem?
a)
decomposer
b)
producer
c)
consumer
d)
predator
19.
Which organism receives its energy from the sun?
a)
a grasshopper
b)
a tree
c)
a bee
d)
a bear
20.
Which organisms use energy to make nutrients for plants?
a)
producers
b)
consumers
c)
decomposers
d)
herbivores
21.
Which is the term for secondary consumers in an ecosystem?
a)
carnivore
b)
producer
c)
herbivore
d)
prey
22.
Which organism is a decomposer?
a)
fungus
b)
ladybug
c)
spider
d)
sunflower
23.
Which group of organisms make up the largest part of a food chain?
a)
consumers
b)
decomposers
c)
producers
d)
scavengers
24.
Which would most likely increase the number of squirrels living in an area?
a)
cutting down trees that serve as habitats for squirrels
b)
planting trees that produce nuts squirrels do not eat
c)
reducing the number of animals that hunt and kill squirrels
d)
removing all of the food sources for squirrels from the area
25.
Which would be the most likely result if all the producers in an area were destroyed?
a)
Herbivores in the area would become carnivores in order to survive.
b)
The number of all of the organisms in the area would increase.
c)
Different types of animals would move into the area.
d)
The number of consumers would greatly decrease.
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