Nature Calls
Go With The Flow
Put Down Roots
It's a Jungle out There
Wild Goose Chase
100
Over 50 years, the size of a 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.
More tigers were born than died.
3. More tigers were born than died.
100
A molecule that organisms need to survive
What are Energy Storage Molecules?
100
The population that is eating another population for energy storage molecules.
What is a consumer population?
100
There has been a sudden decrease in the amount of zooplankton in the food web. What impact would this have on both the moon jelly and walleye pollock?
less zooplankton pop. = less ESM available for Moon jelly & walleye pollock = less reproduction = less births than deaths = decrease in population.
100
all the living things and nonliving things that interact in a particular area
What is an ecosystem?
200
A large population of ducks live in an area with a lake. In the last 40 years, the size of the duck population 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.
1. The number of ducks that were born was the same as the number of ducks that died.
200
a scientist who studies the interactions of organisms with each other and their environment
What is an ecologist?
200
State the purpose of a consumer population. What do they do? State what they need.
What are energy storage molecules?
200
Explain what the arrow means in the food web below.
Arrow shows where the energy is going
(____ gives energy to _____)
200
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?
- 1. increase. An increase in any population within an ecosystem causes an increase in the sizes of all other populations in an ecosystem.
- 2. 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.
2. 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.
300
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.
1. Fewer mice were born than died
300
A system can be ________ even as things are being added to and removed from it. If the amounts being added and being removed are not equal, then the system will ________.
stable,change
300
State why organisms need Energy storage molecules.
What are organisms need energy storage molecules to reproduce and for energy to do things like fight, breathe and do anything we do!)?
300
Analyze the food web and answer the following question: What change can you make to the food web that will cause the stingwing population to increase?
Answers will vary
300
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?
1.decrease. A decrease in the size of one population leads to a decrease in the sizes of all other populations in an ecosystem.
2.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.
3. stay the same. Polar bears do not eat cod, so the number of births and deaths in the cod population will stay the same.
4. 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.
2. 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.
400
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.
3. Fewer bluefish were born than died.
400
When two or more populations use the same resource, such as the same food source.
What is competition?
400
True or false: Organisms also interact with each other, and help each other.
Give an example
TRUE! They need to interact in order to have a healthy sustainable ecosystem.
Examples: ANSWERS VARY
400
Name the 5 Levels in the food chain
Producers, Primary consumers, secondary consumers, tertiary consumers, and Apex Predator
400
Both furbils and stingwings eat weebugs. Which of these three populations is a resource population?
Weebugs
500
Why do apex predators such as eagles and hawks need energy?
Flying
Breathing
Digesting food
All of the above
4. All of the above
500
What is a food chain?
a model that shows what eats what and who receives energy from whom in an ecosystem (eating relationship)
500
What do mammals like tigers and zebras need energy for?
1. Running
2. Breathing
3. Digesting food 4. All of the above
4. All of the above
500
a scientist who studies ecology and looks at how all the biotic and abiotic factors in an ecosystem are related
Who is an ecologist?
500
1. moving into a population
2. moving out of a population
1. What is immigration?
2. What is emigration?