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WorksheetsEnvironmental Science District Assessment Prep '20-'21
Total questions: 25
Worksheet time: 1hrs 3mins
The picture shows a pond environment. Which level of organization do the dragonflies and lily pads, Z, that are interacting in this environment represent?
an organism
a community
a population
an ecosystem
The picture shows a reef environment. The stingray resting on the bottom of the reef represents
a community.
a population
an organism
an ecosystem
All of life on Earth exists in
a single ecosystem
a single biome
the biosphere
the hydrosphere
What term describes all of the members of a species of mockingbirds that live in the same area of Tampa?
a biome
a population
a community
an ecosystem
Which of the following represents the lowest level of organization in this forest environment?
the single deer standing near the flowing river
the river supplying the organisms with water
the squirrels eating the nuts and acorns from the trees
the group of bushes providing shade for small insects
Which level of organization do all of the living and nonliving factors, X, interacting in the pond environment represent?
an ecosystem
a population
an organism
a community
This food web reveals that, as matter flows through trophic levels,
matter from consumers, such as the green lynx spider, is eventually recycled by decomposers, such as a fungus.
matter from producers, such as the cutleaf daisy, is immediately recycled by decomposers, such as a bacterium.
matters from all organisms, such as the Bald eagle, is dissipated at each level and none of it is recycled.
matter from the Sun is recycled after many years by consumers, such as a Bachman's sparrow.
Why do higher trophic levels in most ecosystems contain fewer organisms than lower trophic levels?
Energy available for use to the highest trophic level is small
Energy available for use to the lowest trophic level is small.
Energy available for use to the highest trophic level is large.
Energy available for use to the highest and lowest trophic levels is the same.
Which of the following statements is most likely correct?
The amount of energy is identical in each level of the pyramid.
The amount of energy increases at each successive level from D to A.
The total amount of energy at level D is less than the total amount of energy at level B.
The total amount of energy needed to sustain the pyramid enters the ecosystem at level C.
Which of the following best describes how the chemical energy travels up the food pyramid?
Chemical energy is used by each of the organisms in the food pyramid, resulting in less energy as it moves up the pyramid.
Chemical energy is made by each of the organisms in the food pyramid, resulting in more energy as it moves up the pyramid.
Chemical energy is not needed by the organisms in the food pyramid, resulting in equal amounts of energy throughout the food pyramid.
Chemical energy is used by producers but created by consumers, resulting in fluctuations in the amounts of energy throughout the food pyramid.
Suppose the farmer sprays a field with a chemical fertilizer. Based on the flow of energy in the lake, which organisms would contain the highest concentration of the chemical fertilizer?
fishes and crabs
diatoms and algae
zooplankton
large-sized fishes
Which statement best explains how the animals in the diagram contribute to the carbon cycle?
They eat plants and other organisms that contain carbon which prevents it from ever being stored.
They eat plants and other organisms which contain carbon and deposit carbon into the soil when they die.
They remove carbon from the atmosphere during respiration and replace it with oxygen that is used in photosynthesis.
They remove carbon from the soil during respiration and exchange it with oxygen that evaporates into the atmosphere.
Scientists researching Pacific sea otters find that many members of the population are infected by a parasite, and a number of the sea otters must be destroyed to save the entire sea otter population. One of the main foods of sea otters is sea urchin, which eat kelp. The kelp forest is home to many species of fish. How is destroying some of the sea otters most likely to affect fish living in the kelp forest?
Destroying the sea otters will cause the fish population to increase.
Destroying the sea otters will cause the fish population to become extinct.
Destroying the sea otters will allow the fish population to remain constant.
Destroying the sea otters will cause the fish population to decrease.
What impact do the amounts of available energy, water, and oxygen have on an ecosystem?
They are used as nutrients by living organisms.
They recycle the residue of dead organisms.
They control the environment's energy source.
They act as limiting factors on the organisms.
Bears and wolves eat deer, boar, sheep, and other livestock. If the bear population in an ecosystem decreases, what would be the effect on the deer population?
The population would increase, as predation by bears is a limiting factor.
The population would increase, as competition for food is a limiting factor.
The population would decrease, as shelters created by bear caves is a limiting factor.
The population would decrease, as the loss of bears as part of their diet is a limiting factor.
A student is investigating the population size of rabbits in a woodland ecosystem. She researches the known population of rabbits over 125 years and creates a graph representing the rabbit population with a solid line and the ecosystem's carrying capacity with a dotted line. Based on the information in the graph, what conclusion can the student draw about the time period between 1800 and 1835?
The rabbit population had many limiting factors and the ecosystem was beyond its carrying capacity.
The rabbit population had few limiting factors and the ecosystem was beyond its carrying capacity.
The rabbit population had many limiting factors and the ecosystem had not yet reached its carrying capacity.
The rabbit population had few limiting factors and the ecosystem had not yet reached its carrying capacity.
Which of the following refers to a population reaching a size that can no longer be supported by available resources in the surrounding environment?
exponential growth
survivorship
environmental resistance
carrying capacity
Alligators will use their powerful feet, tail, and snouts to dig a hole through the mud, producing small ponds known as "alligator holes." Many other species benefit from alligator holes. During the dry season, fish, turtles, and other aquatic animals live in the alligator holes. Birds, terrestrial animals, and plants use these holes as a source of water. What term best describes the role of alligators in this ecosystem?
invasive exotic species
keystone species
producer
primary consumer
When conditions are stable, which energy pyramid correctly represents the amount of available energy to the organisms in the ecosystem?
Which diagram correctly represents the carbon dioxide-oxygen cycle?
While watching a nature program on TV about animals in an African savanna, Khloe realized that she was seeing a food chain in action. She saw some zebras eating grass and shrubs, and then she saw cheetahs eating other zebras. If Khloe were to draw a food chain for the environment on the nature program, to which living thing should the last arrow point?
Cheetah
Grass
Zebra
Shrubs
How do nutrients, such as carbon and water, move through an ecosystem?
in biogeochemical cycles
in ecological pyramids
in energy pyramids
in food webs
The picture that represents a community is
W, a group of one type of organism interacting in an environment.
X, many types of organisms interacting with their nonliving environment.
Y, a single lion resting by itself and not interacting.
Z, a group of zebras and wildebeests interacting.
Which picture represents an organism?
W
X
Y
Z
Which picture represents a population?
Q
R
S
T
