Key Concepts I
Key Concepts II
Direct effects on populations
Food Web
Vocabulary
100
Within a population organisms are always being _____________ and ______________.
Born and Dying
100
Organisms in _____________ populations get energy storage molecules from eating organisms in _____________ populations.
Consumer and Resource
100
What happens to the size of a population when there are more births than deaths?
The population increases
100
Food web:
What would happen to this food web if the greenleaf population were to suddenly decrease?
The weebugs population would decrease due to lack of food and the furbil population would decrease due to the weebugs decrease.
100
What is a population?
a group of the same type of organism living in the same area
200
A system can be ___________ even as things are being added to and removed from it. If the amount being added and being removed are not equal, then the system will ______________.
Stable and change
200
The more energy storage molecules available to a population, the more the organisms in that population can _________________.
Reproduce
200
What happens to a population when there are more deaths than births?
The population decreases
200
What does this diagram show?
The fox eats the vole
The vole is the resource population
The fox is the consumer population
200
all the living and nonliving things interacting
in a particular area
Ecosystem
300
If the number of births and deaths in a given time are equal, then the population size will be ____________.
Stable
300
The larger the resource population, the more ________________________ are available for the consumer population.
Energy storage molecules
300
When is a population considered stable?
When the number of births and deaths are about the same
300
What would happen to the weebugs if the furbil population were to increase?
The weebug population would decrease.
300
Competition
When two or more populations use the same resource
400
If there are more births than deaths in a given time, then the size of the population will ______________. If there are fewer births than deaths, then the size of the population will _____________.
Increase and deacrease
400
The larger the consumer population, the more energy storage molecules it will need. Therefore, it will eat _______, causing more deaths in the _________
more and resource population
400
Explain what would happen to the zooplankton population if its resource population increased
The zooplankton population would increase because it would have more food and more energy storage molecules.
400
How would an increase in the algae population affect the moon jelly population?
If the algae population increases, the zooplankton population would increase causing the moon jelly population to increase.
400
A model that shows what eats what in an ecosystem
food web
500
Organisms need to release _____________ from energy storage molecules in order to reproduce
Energy
500
Two populations can ________________ for the same resource population. A change to one of these populations affects the _____________ of the other.
compete and size
500
Explain what would happen to the jelly population if its consumer population increased
The moon jelly population would decrease because more would get eaten by the consumer population
500
How would a decrease in the moon Jelly population affect the walleye population?
The moon jelly and walleye complete for zooplankton. If the jelly population decreases, there is more food for the walleye. The walleye population would increase.
500
Consumer population
A population that eats organisms from another population