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WorksheetsPopulations and Resources - Beginning of Chapter 2 Quiz
Total questions: 211
Worksheet time: 7hrs 31mins
all the living and nonliving things interacting in a particular area
ecosystem
ecologist
exosystem
ecology
Check all the things that could be found in an ecosytem.
animals
plants
rocks
streams
living things, such as plants, animals, and bacteria are called
organisms
organ systems
organ music
organizations
when two or more populations use the same resource, such as the same food source
competition
completion
cooperation
consumerism
Check all the following that are organisms.
elk
soil
bacteria
pine trees
A consumer population is
a population that eats organisms from another population
a population that is eaten by organisms from another population
a population that uses up more energy than other populations
a population that gets it's energy all from plants
Quizziz quizzes make it fun to learn and test myself.
Yeah! I wish we had them more often.
Yes
Nah! They are pretty boring.
No
a scientist who studies interactions of organisms with each other and their environment
ecologist
geologist
cosmologist
biologist
What type of scientist might be most likely to work with an ecologist?
astronomer
geologist
cosmologist
biologist
How can we define energy?
as the ability to make things move or change
as the ability to go up or down
as the ability to rise or fall
as the ability to go in circles
What is a molecule that organisms can use to release the energy they need to survive
an energy storage molecule
a water storage molecle
an internal storage molecule
any storage molecule
Check all of the energy storage molecules:
glucose
fats
proteins
water
A model that shows what eats what in an ecosystem is a
food web
food chain
food fight
food court
What is a population?
a group of the same type of organism living in the same area
a group of similar organisms in an ecosystem
a group of people attending a movie
a group of different types of organisms in the same area
A population that is eaten by organisms from another population is a
resource population
resort population
resident population
respectful population
Which of the following is a type of organism that is a resource population?
grass
mice
lions
krill
a small part that is meant to show what the whole is like
a sample
a bit
a piece
a molecule
a group of the same type of organism living in the same area
population
populist
popcorn
pop music
Choose all the factors that affect an increase or decrease in a population.
availability of food sources
deaths
births
scientific name
A ________ depends on its ____ for getting its energy molecules (fats, carbohydrates and proteins)
predator/prey
organism/predators
person/friends
crustacean/shell
all the living and nonliving things interacting in a particular area
ecosystem
ecologist
exosystem
ecology
Check all the things that could be found in an ecosytem.
animals
plants
rocks
streams
living things, such as plants, animals, and bacteria are called
organisms
organ systems
organ music
organizations
when two or more populations use the same resource, such as the same food source
competition
completion
cooperation
consumerism
Check all the following that are organisms.
elk
soil
bacteria
pine trees
A consumer population is
a population that eats organisms from another population
a population that is eaten by organisms from another population
a population that uses up more energy than other populations
a population that gets it's energy all from plants
Quizziz quizzes make it fun to learn and test myself.
Yeah! I wish we had them more often.
Yes
Nah! They are pretty boring.
No
a scientist who studies interactions of organisms with each other and their environment
ecologist
geologist
cosmologist
biologist
What type of scientist might be most likely to work with an ecologist?
astronomer
geologist
cosmologist
biologist
How can we define energy?
as the ability to make things move or change
as the ability to go up or down
as the ability to rise or fall
as the ability to go in circles
What is a molecule that organisms can use to release the energy they need to survive
an energy storage molecule
a water storage molecle
an internal storage molecule
any storage molecule
Check all of the energy storage molecules:
glucose
fats
proteins
water
A model that shows what eats what in an ecosystem is a
food web
food chain
food fight
food court
What is a population?
a group of the same type of organism living in the same area
a group of similar organisms in an ecosystem
a group of people attending a movie
a group of different types of organisms in the same area
A population that is eaten by organisms from another population is a
resource population
resort population
resident population
respectful population
Which of the following is a type of organism that is a resource population?
grass
mice
lions
krill
a small part that is meant to show what the whole is like
a sample
a bit
a piece
a molecule
a group of the same type of organism living in the same area
population
populist
popcorn
pop music
Choose all the factors that affect an increase or decrease in a population.
availability of food sources
deaths
births
scientific name
A ________ depends on its ____ for getting its energy molecules (fats, carbohydrates and proteins)
predator/prey
organism/predators
person/friends
crustacean/shell
A population of tigers lives in Bangladesh. Over 50 years, the size of the tiger population increased. What best explains the increase in the size of the tiger population?
A lot of tigers were born and none of them died.
Fewer tigers were born than died.
The tiger population is always increasing because no animal eats tigers.
More tigers were born than died.
Scientists have been studying the size of three populations in a grassland. In this ecosystem, lizards eat fireflies, and fireflies eat gnats (a type of insect). The data showed that all three populations were stable. Then the lizard population decreased suddenly. What will most likely happen to the size of the firefly population as a result?
The firefly population will . . .
increase because there are less lizards eating them.
decrease because there are more lizards eating them.
stay the same
increase because there will be more energy storage molecules available for the fireflies to eat.
In Australia, both opossums and foxes eat rats. The sizes of the populations have been stable for the last 12 years, but recently the size of the opossum population increased. What will likely happen to the fox population?
The size of the fox population will . . .
increase because there will be more rats to make energy.
decrease because the opossum population is taking more energy storage molecules from the rats.
stay the same because there are still energy storage molecules available.
decrease because the opossum population is using the fox population for energy storage molecules.
A population of bluefish lives in the Gulf of Mexico. Over the last 50 years, the size of the bluefish population has decreased. What best explains the decrease in the size of the bluefish population?
A lot of bluefish died and no new bluefish were born.
Fewer bluefish were born than died.
More bluefish were born than died.
The bluefish population is always decreasing because bluefish are always being eaten.
Scientists have been studying the size of three populations in a region. In this ecosystem, lions eat wild pigs, and wild pigs eat frogs. The data showed that all three populations were stable. Then the frog population decreased suddenly. What will likely happen to the size of the wild pig population as a result?
The size of the wild pig population will . . .
increase because the wild pigs and lions will find energy storage molecules elsewhere.
decrease because there are less energy storage molecules available.
stay the same because the lions are still stable.
In the Arctic Ocean, sharks eat whales, and whales eat crabs. In the last 10 years, the sizes of the populations have been stable, but recently the size of the crab population increased. What will likely happen to the shark population?
The size of the shark population will . . .
increase
decrease
stay the same
A large population of ducks lives in an area with a lake. In the last 40 years, the size of the duck population has stayed the same. What must be true about the duck population during the last 40 years?
The number of ducks that were born was the same as the number of ducks that died.
Humans started protecting the duck population so they stopped dying.
No ducks were born and no ducks died.
The ducks did not have any baby ducks during these years.
Scientists have been studying the size of three populations in a swampland. In this ecosystem, herons (a type of bird) eat frogs, and frogs eat dragonflies. The data showed that all three populations were stable. Then the dragonfly population increased suddenly. What will likely happen to the frog population as a result?
The size of the frog population will . . .
increase
decrease
stay the same
In North America, both bears and eagles eat trout. The sizes of the populations have been stable for the last 9 years, but recently the size of the eagle population decreased. What will likely happen to the bear population?
The size of the bear population will . . .
increase
decrease
stay the same
A population of mice lives in the northeastern United States. Over the last 50 years, the size of the mouse population decreased. What best explains the decrease in the size of the mouse population?
Fewer mice were born than died.
More mice were born than died.
A lot of mice died and no new mice were born.
The mouse population is always decreasing because mice are always being eaten.
Scientists have been studying the size of three populations in Peru. In this ecosystem, pumas (large wild cats) eat deer, and deer eat grass. The data showed that all three populations were stable. Then the puma population increased suddenly. What will most likely happen to the size of the deer population as a result?
The size of the deer population will . . .
increase
decrease
stay the same
In the Arctic region, polar bears eat seals, and seals eat cod (a type of fish). In the last 7 years, the sizes of all the populations stayed stable, but recently the size of the polar bear population decreased. What will likely happen to the cod population?
The size of the cod population will . . .
increase because when one population increases, the others do too.
decrease because less seals are being eating, making them increase, and eating more cod.
stay the same
What are the living components or an ecosystem referred to as?
Abiotic
Biotic
Unknown
Aliens
What are the non-living components or an ecosystem referred to as?
Abiotic
Biotic
Unknown
Aliens
What type of consumer only eats plants?
Carnivore
Omnivore
Herbivore
Producer
What type of consumer only eats meat/flesh?
Herbivore
Carnivore
Omnivore
Producer
What type of consumer eats BOTH plants and flesh/meats?
Omnivore
Carnivore
Herbivore
Producer
A snake can be classified as which of the following?
Herbivore
Carnivore
Omnivore
Producer
A population of panthers lives in the southeastern United States. Over 50 years, the size of the panther population in the region increased. What best explains the increase in the size of the panther population?
The panther population is always increasing because no animal eats panthers.
Fewer panthers were born than died.
More panthers were born than died.
A lot of panthers were born and none of them died.
The data showed that all three populations were stable. Then the penguin population decreased suddenly. What will likely happen to the size of the sardine population as a result?
stay the same. The size of its resource population did not change, so the amount of energy storage molecules available for the sardines did not change. There will be the same number of births and deaths in the sardine population.
decrease. A decrease in one population causes a decrease in the sizes of all other populations in the ecosystem.
increase. The smaller penguin population will leave more energy storage molecules available for the sardine population to reproduce more. This will lead to more births in the sardine population.
increase. The smaller penguin population will need fewer energy storage molecules, so they will eat fewer sardines. This will lead to fewer deaths than births in the sardine population.
In a mountain region, tigers eat wild pigs, and wild pigs eat worms. In the last 5 years, the sizes of the populations have been stable, but recently the tiger population has increased. What will likely happen to the worm population?
increase. The larger tiger population will lead to fewer wild pigs. The smaller wild pig population will need fewer energy storage molecules to reproduce, so they will eat fewer worms. This will lead to more births than deaths in the worm population.
increase. An increase in the size of any population leads to an increase in the sizes of all other populations in an ecosystem.
stay the same. Tigers do not eat worms, so the number of births and deaths in the worm population will stay the same.
decrease. The larger tiger population will leave fewer energy storage molecules available in the ecosystem for the worm population, so there will be fewer births in the worm population.
What do birds such as eagles and hawks need energy for?
Flying
Breathing
Digesting Food
All of the above
A population of deer lives in Canada. Over 50 years, the size of the deer population decreased. What best explains the decrease in the size of the deer population?
A lot of deer died and no deer were born.
Fewer deer were born than died.
The deer population is always decreasing because deer are always being eaten.
More deer were born than died.
The data showed that all three populations were stable. Then the hawk population increased suddenly. What will likely happen to the size of the sparrow population as a result?
stay the same. The size of their resource population did not change, so the amount of energy storage molecules available for the sparrows did not change. There will be the same number of births and deaths in the sparrow population.
decrease. The larger hawk population will leave fewer energy storage molecules available for the sparrows, so the sparrow population will reproduce less. This will lead to fewer births in the sparrow population.
decrease. The larger hawk population will need more energy storage molecules, so they will eat more sparrows. This will leads to more deaths than births in the sparrow population.
increase. An increase in any population leads to an increase in the sizes of all other populations in the ecosystem.
In a rainforest, anteaters eat ants, and ants eat aphids (a type of very small insect). The sizes of the populations have been stable for the last 10 years, but recently the size of the aphid population decreased. What will likely happen to the anteater population?
stay the same. Anteaters do not eat aphids, so the number of births and deaths in the anteater population will stay the same.
decrease. Fewer energy storage molecules will be available to the anteater population from the smaller ant population, so the anteater population will reproduce less. This will lead to fewer births than deaths in the anteater population.
decrease. A decrease in the size of any population leads to a decrease in the sizes of all other populations in an ecosystem.
increase. The smaller aphid population will leave more energy storage molecules available in the ecosystem for the anteater population, so there will be more births in the anteater population.
A large population of squirrels lives in a forest. In the last 50 years, the size of the squirrel population has stayed the same. What must be true about the squirrel population during the last 50 years?
The number of squirrels that were born was the same as the number of squirrels that died.
Humans started protecting the squirrel population so they stopped dying.
The squirrels did not have any baby squirrels during these years.
No squirrels were born and no squirrels died.
The data showed that all three populations were stable. Then the grasshopper population decreased suddenly. What will likely happen to the size of the rat population as a result?
stay the same. The size of their consumer population did not change, so the number of deaths in the rat population did not change. There will be the same number of births and deaths in the rat population.
increase. The smaller grasshopper population will need fewer energy storage molecules so there will be more energy storage molecules available for the rat population to reproduce. This will lead to more births in the rat population.
decrease. A decrease in any population leads to a decrease in the sizes of all other populations in the ecosystem.
decrease. The smaller grasshopper population provides fewer energy storage molecules for the rat population, so the rat population will reproduce less. This will lead to fewer births than deaths in the rat population.
In the northwestern United States, both coyotes and wolves eat deer. The sizes of the populations have been stable for the last 6 years, but recently the size of the wolf population increased. What will likely happen to the coyote population?
decrease. Fewer energy storage molecules will be available to the coyote population from the smaller deer population, so the coyote population will reproduce less. This will lead to fewer births than deaths in the coyote population.
decrease. The larger wolf population will leave fewer energy storage molecules for all other populations in the ecosystem, so the coyote population will reproduce less. This will lead to fewer births in the coyote population.
increase. An increase in the size of any population leads to an increase in the sizes of all other populations in an ecosystem.
stay the same. Coyotes and wolves do not eat each other, so the number of births and deaths in the coyote population will stay the same.
What do mammals like tigers and zebras need energy for?
Running
Breathing
Reproducing
All of the above
A population of sharks lives in the Atlantic Ocean. Over the last 50 years, the size of the shark population increased. What best explains the increase in the size of the shark population?
A lot of sharks were born and no sharks died.
The shark population is always increasing because no animal eats sharks.
More sharks were born than died.
Fewer sharks were born than died.
The data showed that all three populations were stable. Then the snail population increased suddenly. What will likely happen to the size of the perch population as a result?
increase. An increase in any population within an ecosystem will lead to an increase in the sizes of all other populations in the ecosystem.
increase. The larger snail population will provide more energy storage molecules for the perch population, so they will reproduce more. This will lead to more births than deaths in the perch population.
stay the same. The size of its consumer population did not change, so the number of deaths in the perch population did not change. There will be the same number of births and deaths in the perch population.
decrease. The larger snail population will take more energy storage molecules from the ecosystem, leaving fewer available for the perch population. This will lead to more deaths than births in the perch population.
In a rainforest, both spiders and frogs eat flies. The sizes of the populations have been stable for the last 10 years, but recently the size of the frog population decreased. What will likely happen to the spider population?
increase. The smaller frog population will leave more energy storage molecules for all other populations in the ecosystem, so all populations will reproduce more. This will lead to more births in the spider population.
increase. More energy storage molecules will be available to the spider population from the larger fly population, so the spider population will reproduce more. This will lead to more births than deaths in the spider population.
stay the same. Frogs and spiders do not eat each other, so the number of births and deaths in the spider population will stay the same.
decrease. A decrease in the size of one population leads to a decrease in the sizes of all other populations in an ecosystem.
A producer is something that:
Eats plants
Makes its own food
Eats animals
Eats plants and animals
Producers are always at the __________ of a food chain
Beginning
Middle
End
Producers are not part of the food chain
Consumers...
Make their own food
Go through photosynthesis
Eat other organisms
Breathe in carbon dioxide
Which of these things is NOT a consumer
Human
Whale
Tree
Chicken
What do the arrows show in this food chain:
plant → grasshopper → bird → snake → owl.
The arrow shows the transfer of energy from the resources population to the consumer population.
The arrow points from the organism that eats it to the organism that is being eaten.
The arrow points from biggest animal to smallest animal.
The arrow points from the consumers to the producers.
What is the producer in this food chain?
phytoplankton → krill → fish → shark
Phytoplankton
Krill
Fish
Shark
As you move through a food chain, the amount of energy stored....
Increases
Decreases
Stays the same
It depends on the ecosystem
Arrows in a food web show the flow of
energy
protein
nutrients
glucose
Multiple food chains that interact together is called a ....
Spider Web
Food Spider
Food Web
Web of Food
What do decomposers eat?
Dead things
Living things
Mushroom (Fungus)
Decomposer
Producer
Consumer
Trees
Decomposers
Consumers
Producers
Falcon
Decomposer
Consumer
Producer
Cactus
Abiotic
Biotic
What are the two REACTANTS in photosynthesis?
Carbon dioxide and oxygen
Water and sunlight
Water and carbon dioxide
Glucose and sunlight
What are the PRODUCTS in photosynthesis?
Sunlight and water
Carbon dioxide and water
Glucose and carbon dioxide
Glucose and oxygen
What does an ecosystem NEED to survive?
Sunlight
Oxygen
Carbon Dioxide
All of the above
An ecosystem is made up of ______ .
living things and their offspring
nonliving things such as rocks and soil
living things and nonliving things
many types of animals
What causes a population size to increase?
The number of births is greater than the number of deaths.
The number of deaths is greater than the number of births.
The number of births and the number of deaths is equal.
What causes a population size to decrease?
The number of births is greater than the number of deaths.
The number of deaths is greater than the number of births.
The number of births and the number of deaths is equal.
If the population size stays stable, does this mean that no organisms have been born or died?
Yes, because if organisms were born or died that would change the number of organisms in the population.
No, because if some organisms are born and the same number of organisms die, then the total population size can stay constant.
Yes, because some organisms never die, so they don't need to reproduce.
No, because all organisms will give birth and then die.
Based on this graph, what must be true about the US honeybee population?
There are more births than deaths occurring.
There are more deaths than births occurring.
There is an equal number of deaths and births occurring.
People don't like honeybees.
When something remains mostly the same over time it is said to have....?
Uneventful
Potential Energy
Stability
Boring
A large population of squirrels lives in a forest. In the last 50 years, the size of the squirrel population has stayed the same. What must be true about the squirrel population during the last 50 years?
No squirrels were born and no squirrels died.
Humans started protecting the squirrel population so they stopped dying.
The squirrels did not have any baby squirrels during these years.
The number of squirrels that were born was the same as the number of squirrels that died.
A consumer population is the population that....
is eaten by others.
eats others.
A resource population the population that....
gets eaten by others
eats others.
If the resource population decreases, then the consumer population will....
Increase
Stay the same
Decrease
If the consumer population decreases, the resource population will....
Increase
Stay the same
Decrease
The diagram above is called a food web. It shows the relationship between foxes and voles. What does the food web show?
foxes eat voles
voles eat foxes
voles compete with foxes
foxes compete with voles
Foxes eat small animals called voles. In southern Sweden, scientists observed that when the vole population decreased, what will happen the fox population?
Population will decrease
Population will remain stable
Population will increase
Energy storage molecules are:
molecules required only for the birth rate
potatoes
a molecule organisms use to stabilize a population
a molecule that organisms can use to release the energy needed to survive
What organism is the main focus of our Amplify unit story?
Marine biologists
Moon Jellies
Orca Whales
Giant Kelp
Which picture accurately shows a "population"?
Which 2 pictures most accurately show an "ecosystem"?
What is a scientific word that refers to new organisms being made?
Reproduce
Renovate
Expire
Subsist
A population of bluefish lives in the Gulf of Mexico. Over the last 50 years, the size of the bluefish population has decreased. What best explains the decrease in the size of the bluefish population?
A lot of bluefish died and no new bluefish were born.
More bluefish were born than died.
Fewer bluefish were born than died.
The bluefish population is always decreasing because bluefish are always being eaten.
A population of tigers lives in Bangladesh. Over 50 years, the size of the tiger population increased. What best explains the increase in the size of the tiger population?
A lot of tigers were born and none of them died.
The tiger population is always increasing because no animal eats tigers.
Fewer tigers were born than died.
More tigers were born than died.
A population of tigers lives in Bangladesh. Over 50 years, the size of the tiger population increased. What best explains the increase in the size of the tiger population?
A lot of tigers were born and none of them died.
The tiger population is always increasing because no animal eats tigers.
Fewer tigers were born than died.
More tigers were born than died.
Scientists have been studying the size of three populations in a grassland. In this ecosystem, lizards eat fireflies, and fireflies eat gnats (a type of insect). The data showed that all three populations were stable. Then the lizard population decreased suddenly. What will most likely happen to the size of the firefly population as a result? The firefly population will . . .
increase. The smaller lizard population will need fewer energy storage molecules so they will eat fewer fireflies. This will lead to fewer deaths than births in the firefly population.
increase. The smaller lizard population will leave more energy storage molecules available for the firefly population to reproduce more. This will lead to more births in the firefly population.
stay the same. The size of its resource population did not change, so the amount of energy storage molecules available for the fireflies did not change. There will be the same number of births and deaths in the firefly population.
decrease. A decrease in any population causes a decrease in the sizes of all other populations in the ecosystem.
In Australia, both opossums and foxes eat rats. The sizes of the populations have been stable for the last 12 years, but recently the size of the opossum population increased. What will likely happen to the fox population? The size of the fox population will . . .
increase. An increase in the size of any population leads to an increase in the sizes of all other populations in an ecosystem.
stay the same. Opossums and foxes do not eat each other, so the number of births and deaths in the fox population will stay the same.
decrease. The larger opossum population will leave fewer energy storage molecules for all other populations in the ecosystem, so the fox population will reproduce less. This will lead to fewer births than deaths in the fox population.
decrease. Fewer energy storage molecules will be available to the fox population from the smaller rat population, so the fox population will reproduce less. This will lead to fewer births than deaths in the fox population.
A population of bluefish lives in the Gulf of Mexico. Over the last 50 years, the size of the bluefish population has decreased. What best explains the decrease in the size of the bluefish population?
A lot of bluefish died and no new bluefish were born.
More bluefish were born than died.
Fewer bluefish were born than died.
The bluefish population is always decreasing because bluefish are always being eaten.
Scientists have been studying the size of three populations in a region. In this ecosystem, lions eat wild pigs, and wild pigs eat frogs. The data showed that all three populations were stable. Then the frog population decreased suddenly. What will likely happen to the size of the wild pig population as a result? The size of the wild pig population will . . .
increase. The smaller frog population will need fewer energy storage molecules so there will be more energy storage molecules available to the wild pig population. This will lead to more births in the wild pig population.
decrease. The smaller frog population will provide fewer energy storage molecules for the wild pig population, so the wild pig population will reproduce less. This will lead to fewer births than deaths in the wild pig population.
decrease. A decrease in any population causes a decrease in the sizes of all other populations in an ecosystem.
stay the same. The size of their consumer population did not change, so the number of deaths in the wild pig population did not change. There will be the same number of births and deaths in the wild pig population.
In the Arctic Ocean, sharks eat whales, and whales eat crabs. In the last 10 years, the sizes of the populations have been stable, but recently the size of the crab population increased. What will likely happen to the shark population? The size of the shark population will . . .
decrease. The larger crab population will leave fewer energy storage molecules available in the ecosystem for the shark population, so there would be fewer births in the shark population.
increase. An increase in the size of any population leads to an increase in the sizes of all other populations in an ecosystem.
increase. More energy storage molecules will be available to the shark population from the larger whale population, so the shark population will reproduce more. This will lead to more births than deaths in the shark population.
stay the same. Sharks do not eat crabs, so the number of births and deaths in the shark population will stay the same.
A large population of ducks lives in an area with a lake. In the last 40 years, the size of the duck population has stayed the same. What must be true about the duck population during the last 40 years?
The number of ducks that were born was the same as the number of ducks that died.
No ducks were born and no ducks died.
Humans started protecting the duck population so they stopped dying.
The ducks did not have any baby ducks during these years.
Scientists have been studying the size of three populations in a swampland. In this ecosystem, herons (a type of bird) eat frogs, and frogs eat dragonflies. The data showed that all three populations were stable. Then the dragonfly population increased suddenly. What will likely happen to the frog population as a result? The size of the frog population will . . .
increase. An increase in any population within an ecosystem causes an increase in the sizes of all other populations in an ecosystem.
increase. The larger dragonfly population will provide more energy storage molecules for the frog population, so they will reproduce more. This will lead to more births than deaths in the frog population.
stay the same. The size of its consumer population did not change, so the number of deaths in the frog population did not change. There will be the same number of births and deaths in the frog population.
decrease. The larger dragonfly population will take more energy storage molecules from the ecosystem, leaving fewer available for the frog population. This will lead to fewer births in the frog population.
In North America, both bears and eagles eat trout. The sizes of the populations have been stable for the last 9 years, but recently the size of the eagle population decreased. What will likely happen to the bear population? The size of the bear population will . .
stay the same. Eagles and bears do not eat each other, so the number of births and deaths in the bear population will stay the same.
increase. The smaller eagle population will leave more energy storage molecules for all other populations in the ecosystem, so all populations will reproduce more. This will lead to more births in the bear population.
increase. More energy storage molecules will be available to the bear population from the larger trout population, so the bear population will reproduce more. This will lead to more births than deaths in the bear population.
decrease. A decrease in the size of one population leads to a decrease in the sizes of all other populations in an ecosystem.
A population of mice lives in the northeastern United States. Over the last 50 years, the size of the mouse population decreased. What best explains the decrease in the size of the mouse population?
Fewer mice were born than died.
A lot of mice died and no new mice were born.
More mice were born than died.
The mouse population is always decreasing because mice are always being eaten.
Scientists have been studying the size of three populations in Peru. In this ecosystem, pumas (large wild cats) eat deer, and deer eat grass. The data showed that all three populations were stable. Then the puma population increased suddenly. What will most likely happen to the size of the deer population as a result? The size of the deer population will . . .
stay the same. The size of their resource population did not change, so the amount of energy storage molecules available for the deer did not change. There will be the same number of births and deaths in the deer population.
increase. An increase in the size of one population leads to an increase in the sizes of all other populations in the ecosystem.
decrease. The larger puma population will leave fewer energy storage molecules available in the ecosystem for the deer. The deer population will reproduce less, leading to fewer births in the deer population.
decrease. The larger puma population will need more energy storage molecules, so they will eat more deer. This will lead to more deaths than births in the deer population.
In the Arctic region, polar bears eat seals, and seals eat cod (a type of fish). In the last 7 years, the sizes of all the populations stayed stable, but recently the size of the polar bear population decreased. What will likely happen to the cod population? The size of the cod population will . . .
decrease. A decrease in the size of one population leads to a decrease in the sizes of all other populations in an ecosystem.
decrease. The smaller polar bear population will lead to more seals. The larger seal population will need more energy storage molecules to reproduce, so they will eat more cod. This will lead to more deaths than births in the cod population.
stay the same. Polar bears do not eat cod, so the number of births and deaths in the cod population will stay the same.
increase. The smaller polar bear population will leave more energy storage molecules available in the ecosystem for the cod population, so there will be more births in the cod population.
Scientists have been studying four populations in one area of the Atlantic Ocean. In this area, both tuna and dolphins eat squid, and squid eat herring (a type of fish). The data shows that recently the tuna population increased. How will the increase in the tuna population affect the other populations?
Increase Herring
Decreased Herring
Same Amount of Herring
Scientists have been studying four populations in a swamp area. In this area, alligators eat gar (a type of large fish), and both gar and diving ducks eat crabs. The data showed that recently the alligator population has decreased. How could the decrease in the alligator population affect the other populations? The data showed that recently the alligator population has decreased. How could the decrease in the alligator population affect the other populations?
More Gar
Fewer Gar
Gar stay the same
Scientists have been studying four populations in a swamp area. In this area, alligators eat gar (a type of large fish), and both gar and diving ducks eat crabs. The data showed that recently the alligator population has decreased. How could the decrease in the alligator population affect the other populations? The data showed that recently the alligator population has decreased. How could the decrease in the alligator population affect the other populations?
More Crabs
Fewer Crabs
Same Amount of Crabs
Scientists have been studying four populations in a swamp area. In this area, alligators eat gar (a type of large fish), and both gar and diving ducks eat crabs. The data showed that recently the alligator population has decreased. How could the decrease in the alligator population affect the other populations? The data showed that recently the alligator population has decreased. How could the decrease in the alligator population affect the other populations?
More Ducks
Fewer Ducks
Same amount of Ducks
Scientists have been studying four populations in one area of the Atlantic Ocean. In this area, both tuna and dolphins eat squid, and squid eat herring (a type of fish). The data shows that recently the tuna population increased. How will the increase in the tuna population affect the other populations?
Increase Squid
Decrease Squid
Same Amount of Squid
Scientists have been studying four populations in one area of the Atlantic Ocean. In this area, both tuna and dolphins eat squid, and squid eat herring (a type of fish). The data shows that recently the tuna population increased. How will the increase in the tuna population affect the other populations?
Increase Dolphin
Decrease Dolphin
Same Amount of Dolphin
Elephants eat grass. What is the consumer population?
Elephants
Grass
Both are the consumer population
Neither are the consumer population
Scientists have been studying the size of three populations in a grassland. In this ecosystem, lizards eat fireflies, and fireflies eat gnats (a type of insect). The data showed that all three populations were stable. Then the lizard population decreased suddenly. What will most likely happen to the size of the firefly population as a result?
increase. The smaller lizard population will need fewer energy storage molecules so they will eat fewer fireflies. This will lead to fewer deaths than births in the firefly population.
increase. The smaller lizard population will leave more energy storage molecules available for the firefly population to reproduce more. This will lead to more births in the firefly population.
stay the same. The size of its resource population did not change, so the amount of energy storage molecules available for the fireflies did not change. There will be the same number of births and deaths in the firefly population.
decrease. A decrease in any population causes a decrease in the sizes of all other populations in the ecosystem.
In Australia, both opossums and foxes eat rats. The sizes of the populations have been stable for the last 12 years, but recently the size of the opossum population increased. What will likely happen to the fox population?
increase. An increase in the size of any population leads to an increase in the sizes of all other populations in an ecosystem.
stay the same. Opossums and foxes do not eat each other, so the number of births and deaths in the fox population will stay the same.
decrease. The larger opossum population will leave fewer energy storage molecules for all other populations in the ecosystem, so the fox population will reproduce less. This will lead to fewer births than deaths in the fox population.
decrease. Fewer energy storage molecules will be available to the fox population from the smaller rat population, so the fox population will reproduce less. This will lead to fewer births than deaths in the fox population.
A population of bluefish lives in the Gulf of Mexico. Over the last 50 years, the size of the bluefish population has decreased. What best explains the decrease in the size of the bluefish population?
A lot of bluefish died and no new bluefish were born.
More bluefish were born than died.
Fewer bluefish were born than died.
The bluefish population is always decreasing because bluefish are always being eaten.
Scientists have been studying the size of three populations in a region. In this ecosystem, lions eat wild pigs, and wild pigs eat frogs. The data showed that all three populations were stable. Then the frog population decreased suddenly. What will likely happen to the size of the wild pig population as a result?
increase. The smaller frog population will need fewer energy storage molecules so there will be more energy storage molecules available to the wild pig population. This will lead to more births in the wild pig population.
decrease. The smaller frog population will provide fewer energy storage molecules for the wild pig population, so the wild pig population will reproduce less. This will lead to fewer births than deaths in the wild pig population.
decrease. A decrease in any population causes a decrease in the sizes of all other populations in an ecosystem.
stay the same. The size of their consumer population did not change, so the number of deaths in the wild pig population did not change. There will be the same number of births and deaths in the wild pig population.
In North America, both bears and eagles eat trout. The sizes of the populations have been stable for the last 9 years, but recently the size of the eagle population decreased. What will likely happen to the bear population?
stay the same. Eagles and bears do not eat each other, so the number of births and deaths in the bear population will stay the same.
increase. The smaller eagle population will leave more energy storage molecules for all other populations in the ecosystem, so all populations will reproduce more. This will lead to more births in the bear population.
increase. More energy storage molecules will be available to the bear population from the larger trout population, so the bear population will reproduce more. This will lead to more births than deaths in the bear population.
decrease. A decrease in the size of one population leads to a decrease in the sizes of all other populations in an ecosystem.
Competition occurs when two species share the same ______.
habitat
food source
both of the above
neither of the above
In a rainforest, both spiders and frogs eat flies. The sizes of the populations have been stable for the last 10 years, but recently the size of the frog population decreased. What will likely happen to the spider population?
increase. The smaller frog population will leave more energy storage molecules for all other populations in the ecosystem, so all populations will reproduce more. This will lead to more births in the spider population.
increase. More energy storage molecules will be available to the spider population from the larger fly population, so the spider population will reproduce more. This will lead to more births than deaths in the spider population.
stay the same. Frogs and spiders do not eat each other, so the number of births and deaths in the spider population will stay the same.
decrease. A decrease in the size of one population leads to a decrease in the sizes of all other populations in an ecosystem.
When a populations is known to be STABLE, it:
there are more deaths
there are more births
stays mostly the same, over time
horses live there
An indirect effect is:
the result of one cause leading to an effect that causes one or more other effects
the result of one cause stopping a desired effect
the result of more than one cause leading to the death rate of a population
when there is a direct relationship between one organism and the next
A resource population is:
a population that is avoided by organisms
a population that is eaten by organisms from another population
a population that is traded between organisms
a flea
A small part that is meant to show what the whole is like...?
A piece of something
A fraction
A sample
Competition
In an experiment where 2 groups of crickets were given different amounts of sugar in their food. Sugar is a type of energy storage molecule. Group A was given more sugar than Group B,which was given less sugar. Which group reproduced more?
Group A reproduced more
Group B reproduced more
Neither Group A or Group B reproduced
Both Group A and Group B reproduced the same
True or False? Consumer populations eat resource populations to get the energy they need to reproduce.
True
False
Neither True or False
Both True and False
A consumer population is the population that....
is eaten by others.
eats others.
If the resource population decreases, then the consumer population will....
Increase
Stay the same
Decrease
If the consumer population decreases, the resource population will....
Increase
Stay the same
Decrease
In the northwestern United States, both coyotes and wolves eat deer. The sizes of the populations have been stable for the last 6 years, but recently the size of the wolf population increased. What will likely happen to the coyote population?
The size of the coyote population will . . .
decrease. Fewer energy storage molecules will be available to the coyote population from the smaller deer population, so the coyote population will reproduce less. This will lead to fewer births than deaths in the coyote population.
decrease. The larger wolf population will leave fewer energy storage molecules for all other populations in the ecosystem, so the coyote population will reproduce less. This will lead to fewer births in the coyote population.
increase. An increase in the size of any population leads to an increase in the sizes of all other populations in an ecosystem.
stay the same. Coyotes and wolves do not eat each other, so the number of births and deaths in the coyote population will stay the same.
Scientists have been studying the size of three populations along the coast of Antarctica. In this ecosystem, penguins eat sardines (a type of small fish), and sardines eat zooplankton (very small animals that live in water). The data showed that all three populations were stable. Then the penguin population decreased suddenly. What will likely happen to the size of the sardinepopulation as a result?
The size of the sardine population will .
increase. The smaller penguin population will need fewer energy storage molecules, so they will eat fewer sardines. This will lead to fewer deaths than births in the sardine population.
increase. The smaller penguin population will leave more energy storage molecules available for the sardine population to reproduce more. This will lead to more births in the sardine population.
decrease. A decrease in one population causes a decrease in the sizes of all other populations in the ecosystem.
stay the same. The size of its resource population did not change, so the amount of energy storage molecules available for the sardines did not change. There will be the same number of births and deaths in the sardine population.
Define food web
a model that shows what eats what in an ecosystem
the result of one cause leading to an effect that causes one or more other effects
a group of atoms joined together in a particular way
living things, such as plants, animals, and bacteria
The original source of energy for a food web is...
plants
sun
producers
decomposers
Decomposers get energy from...
the sun
eating plants
eating animals
dead things and waste
Producers are ...
plants
able to do photosynthesis
also called autotrophs
all of these are true
Arrows in a food web represent...
eating
sunlight
energy
matter
Photosynthesis is important because...
it makes carbon dioxide
it makes food for the food webs
it makes water
it's not important
Who is the producer?
lettuce
greenfly
ladybird
thrush
What is a producer?
an organism that gets energy from eating other organisms
an organisms that uses sunlight to make its own food
an organism that gets energy from eating dead organisms, non-living material or waste
An animal that hunts other animals for food is a ___________
herbivore
predator
prey
omnivore
What is a herbivore?
an animal that gets energy from eating other animals
an organism that gets energy from eating only plants
an animal that gets energy by eating both plants and other animals
An organism that gets energy from eating other organisms is a ______________
producer
consumer
decomposer
A connection of food chains with many food energy paths in an ecosystem is a ____________
ecosystem
food web
environment
An animal that is hunted and eaten for food is a
predator
prey
What is a carnivore?
an animal that gets energy by eating other animals
An animal that gets energy by eating only plants
an animal that gets energy by eating both plants and animals
An animal that gets energy from eating both plants and animals is a(n)
herbivore
carnivore
omnivore
Which of the following is NOT a consumer
grass
dog
shark
fish
Which of the following is a living part of the ecosystem?
Air
Sunlight
Mushroom
Soil
Birds eat insects off the skin of cows. If the relationship is a type of mutualism, then the organisms that will benefit are
only the cattle
neither the birds or the cattle
both the birds and the cattle
only the birds
A simple "line" of plants and animals that transfer energy by the process of eating.
Food Chain
Food Web
Ecosystem
Decomposers
Interconnected feeding relationships within an ecosystem that transfer energy from producers to consumers.
Food Chain
Food Web
Decomposer
Ecosystem
An organism in a food chain that is able to make its own food and represents level 1 on the food chain .
Consumer
Producer
Herbivore
Omnivore
An organism in a food web that eats other consumers to obtain energy.
Producer
Secondary
Consumer
Prey
Scavenger
An organism in a food web that eats other consumers to obtain energy and is not eaten by another organism.
Producer
Top Consumer
Prey
Scavenger
An organism in a food chain that breaks down organic matter (left overs) and puts nutrients back in the soil through chemical reactions.
Decomposer
Carnivore
Omnivore
Scavenger
The consumer in a food web that will not be consumed by another animal.
Producer
Secondary Consumer
Primary Consumer
Tertiary- Top Consumer
The fox in this food web would be considered a:
3rd level Consumer
Producer
2nd level Consumer
Primary Consumer
The image provided is an example of a:
Producer
Carnivore
Consumer
Decomposer
The image provided is an example of a(n):
Carnivore
Herbivore
Producer
Omnivore
The image provided is an example of a(n):
Omnivore
Carnivore
Herbivore
Decomposer
