Living/Nonliving
Ecosystems
Food Webs
Food Chains
Random Facts
100
Any living thing
What is an organism
100
What is the smallest group in an ecosystem
What is an organism
100
A team of fourth grade students were tasked with developing a model to describe the roles of animals in a community. The students created the following model of a mangrove near the ocean:
Using the model, which of the following best describe the role of the heron?
The heron is a consumer because it eats small fish.
The heron is a producer since it makes its own food.
The heron is a decomposer because it eats the crabs.
The heron is a producer since it eats the roots of the mangrove tree.
What is the heron is a consumer becasue it eats smaller fish? anwer 1.
100
Given the organisms and the sun below, a student must create a model that best illustrates the flow of energy through a food chain. She must place them in the order that the energy flows, using arrows to point to what receives the energy.
Owl
Sun
Grass
Frog
Grasshopper
Snake
Which sequence BEST illustrates the flow of energy?
owl→ sun→ grass→ frog → grasshopper→ snake
sun→ grass→ grasshopper → frog→ snake→ owl
sun→ grass→ frog→ grasshopper→ snake → owl
grasshopper→ frog→ owl→ sun→ grass→ snake
What is 2 sun→ grass→ grasshopper → frog→ snake→ owl
100
Commercial fishing is when fishermen catch a large amount of fish to provide a large quantity of food around the world.
How could commercial fishing affect the marine ecosystem?
If too many fish are taken out of the ecosystem, the sea bird, another competing consumer, population would also go down.
If too many fish are taken out of the ecosystem, the predator, the dolphin, population would also go down.
If too many fish are taken out of the ecosystem, the phytoplankton, the producer, population would also go down.
If too many fish are taken out of the ecosystem, the rest of the ecosystem will remain unaffected.
What is 1
If too many fish are taken out of the ecosystem, the sea bird, another competing consumer, population would also go down.
200
Which is nonliving? A squirrel, two raccoons, a snake, a rock, a palm tree
What is a rock
200
Describe a population
What is all of one kind of a species that lives in an ecosystem
200
A student made the following chart to describe the roles of animals in a forest ecosystem.
Another classmate reviewed the chart.
Which of the following BEST illustrates the feedback the student should give?
The description for a consumer needs to change to eat another living animal. They do not eat plants. Therefore, the rabbit is not a consumer.
The description for producers and decomposers should be swapped. A producer makes its own food and a decomposer breaks down dead material.
The description for a decomposer needs to change to make its own food after breaking down dead material. An example of a decomposer is a hawk.
The description for consumer and decomposers should be swapped. A consumer makes its own food and a decomposer eats another living thing.
What is
The description for producers and decomposers should be swapped. A producer makes its own food and a decomposer breaks down dead material.
200
The diagram below is an example of an aquatic food chain.
Which organism gets the most energy directly from the sun?
Phytoplankton
Shrimp
Marlin
Shark
What is Phytoplankton
200
In a forest ecosystem, a disease killed many of the rodents.
Which of the following is most likely to occur after this happens?
The numbers of owls will decrease.
The plant population will decrease.
The insect population will decrease.
The number of deer will decrease.
What is 1.
The numbers of owls will decrease.
300
Which of the following is an example of a living thing: a feather, water, a beetle, rocks, a waterfall
What is a beetle
300
Describe what would make up the community of coral reef
What is clown fish, jelly fish, seaweed, etc.
300
Below is a model of a pond ecosystem that a group of fourth grades are analyzing.
Which of the following best describes the role of the water lily?
The water lily is a consumer because it consumes the water to live.
The water lily is a consumer because it eats dead materials.
The water lily is a producer because it makes its own food.
The water lily is a decomposer because it eats insects.
What is c:The water lily is a producer because it makes its own food.
300
A fourth grader developed the model below.
Which of the following BEST describes the role of the decomposer in the food web above?
The decomposer breaks down the secondary consumer once it is dead that will give nutrients to the producer.
The decomposer hunts and eats both of the consumers, which then breaks them down for the producer to use.
The decomposer eats the secondary consumer, which is then eaten by the producer.
The decomposer is where energy is created.
What is 1 The decomposer breaks down the secondary consumer once it is dead that will give nutrients to the producer.
300
A student made a model of a food web in Australia.
A widespread forest fire burned down most of the eucalyptus trees. How would this affect the community?
The community would remain unaffected. There is still another producer that the consumers can all eat.
The koala population would also go down because they would have no food to eat, but the rest of the ecosystem will be unaffected.
The koala population would also go down because they would have no food to eat, therefore, also decreasing the dingo population since they would have less koalas to eat.
The kangaroo population would also go down because they would not have any food to eat, therefore, also decreasing the dingo population since they would have less kangaroos to eat.
What is 3: The koala population would also go down because they would have no food to eat, therefore, also decreasing the dingo population since they would have less koalas to eat.
400
Three of the signs of life of living things
What are moving, growing and changing, responding, needing food, and getting rid of waste.
400
Describe the difference between a habitat and a community
What is a habitat is the background of an ecosystem- the living plants and nonliving things- no animals. A community is all the living things (plants and animals) in an ecosystem
400
A picture of an ecosystem is below.
A student claims that only consumers are part of the ecosystem since consumers require food to survive.
Which of the following BEST describes whether the student’s claim is correct or incorrect.
The student’s claim is correct; consumers eat or make food in order to survive.
The student’s claim is correct; consumers are a type of producer since they both require food.
The student’s claim is incorrect; an ecosystem needs producers in order to make food for the consumers to eat.
The student’s claim is incorrect; an ecosystem only needs producers so they can make their own food.
What is
3. The student’s claim is incorrect; an ecosystem needs producers in order to make food for the consumers to eat.
400
The picture below shows a food chain for an Arctic environment.
Which of the following would most likely occur if the polar bears became extinct?
The number of Arctic Fox would most likely increase while the number of Lemming would most likely decrease
The number of both the Arctic Fox and the Lemming would most likely increase.
The number of both the Arctic Fox and the Lemming would most likely decrease.
The number of Lemming would increase while the number of Arctic Fox would most likely decrease.
What is 2 The number of both the Arctic Fox and the Lemming would most
likely increase.
400
The table shows the basic needs of a robin.
Which environmental change would be harmful to the survival of a robin?
Prairie dogs digging tunnels in the ground.
Beavers building a dam to create a pond.
Humans cutting down trees to build houses.
Ants building large anthills in a schoolyard.
What is 3:
Humans cutting down trees to build houses.
500
In order to survive, all living things need:
What is space, shelter, air (oxygen), food, and water
500
Describe an ecosystem
What is an area of land and all the living and nonliving things that interact within it.
500
A fourth grade student made a model of the savanna ecosystem to show the roles within the ecosystem.
The diagram below illustrates a food web and the flow of energy from one organism to another. Use the diagram to answer the following questions.
Which organisms BEST represents the END of the flow of energy and why?
The lion, the vulture, and the leopard because they are at the top of the web.
The lion, the giraffe, and the rhino because they are separate from all the others.
The lion and the vulture because they do not provide energy for any other organism.
The lion and the leopard because they are the strongest animals.
What is 3. The lion, the vulture, and the leopard because they are at the top of the web.
500
Below is data of the population of monarch butterflies in Mexico.
Using the two sets of data above, which explanation BEST describes the changes in flow of energy in the ecosystem?
The monarch butterfly population is currency extinct, which means that wasps will have no food supply and will also go extinct.
The monarch butterfly population is currently over-abundant, which means that wasps will have more food supply and will also become over-abundant.
The monarch butterfly is currently scarce,which means that wasps will have less food supply and will become over-abundant.
The monarch butterfly is currently scarce,which means that wasps will have less food supply and will also become scarce.
What is 4 The monarch butterfly is currently scarce,which means that wasps will have less food supply and will also become scarce.
500
The graph shows the sizes of two populations. The moose is the prey. The wolf is the predator.
Using the graph, which statement describes the changes in the ecosystem between 1965-1070 and between 1985-1990?
When the population of wolves becomes scarce, the population of moose decreases.
When the population of wolves becomes over-abundant, the population of moose increases.
When the population of wolves becomes over-abundant, the population of moose decreases.
When the population of wolves becomes scarce, the population of moose increases.
What is 4:
When the population of wolves becomes scarce, the population of moose increases.