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Total questions: 24
Worksheet time: 27mins
The diagram below shows the territories for various populations in the same ecosystem. Use the diagram to answer question #1. Which territory would support the largest population of organisms?
W
X
Y
Z
Which is the best example of parasitism?
a flea sucking on the blood of a dog
a fox eating a rabbit
a flowering plant pollinated by a butterfly
a clownfish living inside a sea anemone
A diagram of the carbon cycle is shown below. Use the diagram below to answer the question. Which of the following best explains how the cycling of carbon is connected to the energy flow within an ecosystem?
The cow releases carbon dioxide into the atmosphere through the process of cellular respiration.
The tree releases carbon dioxide into the atmosphere through the process of cellular respiration.
The tree absorbs carbon dioxide through the
process of photosynthesis.
The cow absorbs carbon dioxide through the process of photosynthesis.
What kind of Ecosystem is known as sustainable?
The one in which all species are in balance
The one in which there are no animals
The one in which animals feed on each other
None of the above
A lion is at the top of the food chain, where it is responsible for eating numerous animal species. The lion's job in its ecosystem is to help control the population of other animals in the ecosystem by hunting and eating them. Which of the following best describes the role of a lion within its ecosystem?
The one in which all species are in balance
The one in which there are no animals
The lion’s niche as a predator within the ecosystem
The lion's niche as decomposer within the ecosystem
The chart below shows the human population and the fox population in an area. Use the chart to answer this question. Which best explains the relationship between the human and fox populations in the ecosystem?
Humans compete for the same space as foxes, causing the fox population to decrease.
Humans compete for the same prey as foxes, causing the fox population to decrease.
Humans are affected by the same diseases as foxes, causing both populations to change in the same way.
Human populations and fox populations are not interconnected.
The table below shows information about two mammals that live in forests in North Carolina. Use the table below to answer the question. What is most likely the relationship between the two animals?
commensalism
coexistence
cooperation
symbiosis
Which best explains the role of decomposers in an ecosystem
Decomposers release energy from the decomposition of atmospheric gases in terrestrial environments or to the water in aquatic environments.
Decomposers convert carbon dioxide and water into simple carbohydrates in terrestrial environments or to the water in aquatic environments.
Decomposers recycle nutrients from dead plant or animal matter back to the soil in terrestrial environments or to the water in aquatic environments.
Decomposers absorb energy from the synthesis of inorganic compounds in terrestrial environments or to the water in aquatic environments.
In a food chain, food web, or energy pyramid how does the energy flow through the ecosystem. Describe this using producer, consumers, and decomposers. You may use primary, secondary, tertiary, autotroph, and hetotroph.
Use the food web diagram to answer the question. Which organisms in the food web are competing for the same food resource?
In the ocean, a sea anemone attaches itself to the shell of a hermit crab. The stinging arms of the sea anemone protect the hermit crab, while the movement of the hermit crab brings food to the sea anemone. Which best describes the relationship between the sea anemone and the hermit crab?
coexistence
mutualism
competition
parasitism
Which is an abiotic factor that would affect the growth of a population within an ecosystem?
The availability of water would affect the growth of a population within an ecosystem.
The availability of producers would affect the growth of a population within an ecosystem.
The type of herbivores present would affect the growth of a population within an ecosystem.
The number of carnivores present would affect the growth of a population within an ecosystem.
This energy pyramid model the flow of energy between organisms. Use the diagram to help you answer the question.
The energy needs of organisms increase from level to level in an ecosystem. With each level of the pyramid, only 10% of the energy available is used by organisms.
The energy needs of organisms decrease from level to level in an ecosystem. With each level in an ecosystem transferring only 10%. This means that the remaining 90% is the energy used and lost as heat.
The energy needs of organisms increase from level to level in an ecosystem. Therefore, the total amount of energy available at each level increases in an ecosystem.
The energy needs of organisms do not flow from level to level in an ecosystem. Therefore, the total amount of energy stays the same in an ecosystem.
List 3 biotic factors in an ecosystem.
List 3 abiotic factors in an ecosystem.
Interactions among organisms can:
CLICK ALL THAT APPLY
create stability within ecosystems
facilitate or restrain (limiting factors) growth
enhance or limit the size of populations
maintaining the balance between available resources and those who consume them
change only biotic factors
A stable ecosystem is one where
the population numbers of each organism change at a predictable rate
the supply of resources in the physical environment changes at a predictable rate
energy flows through the ecosystem at a fairly constant rate over time
All of the above
Plants use CO2 in the process of ___________________ to make ___________ and oxygen.
cellular respiration, water
photosynthesis, glucose (sugar)
photosynthesis, water
cellular respiration, glucose (sugar)
Animals use oxygen in the process of _______________ and make more CO2.
photosynthesis
cellular respiration
Animals and plants cannot directly use all of the nitrogen found in our atmosphere.
True
False
Which is true of the relationship between the grass and lion?
The grass is the consumer and the lion is the producer.
As the grass population increases, the lion population increases.
As the grass population decreases, the lion population increases.
As the grass population increases, the lion population remains
the same.
Which of the following is in order from largest to smallest?
ecosystem – community – population – organism
ecosystem – population – community – organism
ecosystem – community – organism – population
Which of the following is a density-dependent limiting factor?
human activities
migration
natural disaster
unusual weather
Which of the following is a density-independent limiting factor?
predation
natural disaster
parasitism
disease
