WorksheetsPopulation and Resources
Total questions: 30
Worksheet time: 15mins
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
a scientist who studies interactions of organisms with each other and their environment
ecologist
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 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
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
