NEW
Font size
WorksheetsEcology Unit Test Review
Total questions: 27
Worksheet time: 14mins
If you were to graph the data in the table, it would show:
an increase in the population over time.
a decrease in the population over time.
the population staying the same over time.
an increase in population at first, followed by a decrease over time.
What might be causing the pattern in these data?
the population’s food resources became less abundant
the population’s predators became less abundant
the population’s habitat became less abundant
the population’s competitors became more abundant
Which statement best describes an important difference between plants and animals?
Plants get food from the soil while animals get food by eating other organisms.
Animals are alive but plants are not
Plants use carbon dioxide from the air and water to make their own food while animals get food by eating other organisms.
Animals use energy stored in food but plants do not.
The role of decomposers in an ecosystem is to:
convert the sun’s energy into energy stored as food
convert plant matter into matter that can be used by animals
eat other living organisms for energy
break down dead and waste matter
A food web shows the flow of __________ through an ecosystem and the cycling of ___________ within an ecosystem.
matter, energy
energy, matter
food, waste products
waste products, food
In the above diagram, which of the following is a producer?
rabbit
owl
human
grass
The original source of energy for this food web is:
soil
the sun
water
nutrients
The word “ecosystem” refers to:
the physical environment
living organisms
living organisms and the physical environment
living organisms in the laboratory
Which of the following statements about introduced species is TRUE?
Most were introduced intentionally by people.
They are more likely to cause problems in natural areas than in urban areas.
They are unlikely to cause problem for people.
Their impact on the local ecosystem is difficult to predict.
Mary decides to release her pet mouse into the woods behind her house. The possible tradeoffs of her decision include:
her mouse may die in its new habitat
she may have introduced a new species into the woods
her mouse may die in its new habitat and she may have introduced a new species
there are no trade-offs associated with her decision
Disruptions in ecosystems:
can be caused by abiotic and biotic factors
can lead to short-term changes but not long-term changes.
can lead to increased stability in the ecosystem.
are usually caused by humans.
What is most likely to happen to the population of minnows in Lake Hiawatha?
it will increase
it will decrease
it will stay the same
it will first increase, then decrease
What is most likely to happen to the population of the new species of fish in Lake Hiawatha?
it will increase
it will decrease
it will stay the same
it will first decrease, then increase
The introduction of this new species of fish into Lake Hiawatha provides an example of:
competition
parasitism
predation
mutualism
Which of the following is an example of a mutualism?
a mosquito feeding on the blood of a bison
a coneflower being pollinated by a bee
a mushroom growing in the soil
a mouse and a bird eating the same kind of seed
The main reason some introduced species survive and overpopulate an area is that:
there are few natural predators in the area
there is not enough food for other organisms
most organisms can survive in new habitats
people feed them
Invasive species are usually:
larger than native species
smaller than native species
the same size as native species
none of the above.
Solutions to problems caused by invasive species:
require using every possible treatment regardless of the trade-offs
are easy to develop
are relatively inexpensive
involve identifying criteria and constraints
What pattern do you see in the number of native birds?
The number of native birds increases from the interior to the edge of the forest.
The number of native birds increases from the edge to the interior of the forest.
The number of native birds shows no pattern
No pattern can be detected because there were no birds towards the edge of the forest.
What pattern do you see in the plants along the transect from the edge to the interior?
The number of native plants increases while the number of non-native plants decreases.
The number of native plants remains the same while the number of non-native plants increases
The number of native plants increases while the number of non-native plants remains the same.
The number of native plants and non-native plants both increase.
What might be causing the above patterns?
Both native plants and birds prefer lower temperatures.
Non-native plants prefer higher temperatures
Both native plants and non-native plants prefer lower temperatures.
Native birds prefer non-native plants.
A population of birds is declining in size. List a factor that may explain this decline.
The birds’ food supply has declined
The number of nesting sites for the birds has decreased.
There are more predators of the birds.
All of the options listed.
A new kind of tree is brought to an island it has never lived on before. Describe how this might affect some of the other life on the island.
It might provide food for animals on the island and their populations would increase.
It could grow so fast on the island that other plants would not be able to compete for light and water and they might disappear.
It could successfully become part of the ecosystem.
All of the options listed
What do you predict will happen to the population of voles in the next 20 years?
Keep going up
It will go down
It will continue to keep going up and down in cycles
Unable to predict due to lack of data
Which organisms receives energy directly from the sun?
Grizzly bear
Fish
Water beetle
Algae
Imagine that a volcano erupts, covering a nearby river and surrounding forest with ash. Roberto says that the animals will come back first because they can move. Irena says that the plants will come back first because they don’t need to eat. Who is correct?
Irena
Roberto
Both are correct
Neither are correct
Graybirds and whitebirds live on North Island. Both types of birds eat the berries of the berry bush. The seeds of the berry bush grow best after the berries are eaten by birds and dropped elsewhere around the island. Whitebirds are also found on nearby South Island. The whitebirds on South Island eat berries and the nuts of the nut tree. Rats are found on both islands. The rats eat berries and bird eggs. Identify an example of competition on North Island.
Between the two kinds of birds
Rats and whitebirds compete for berries
Birds and the berries
None of the options listed
