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WorksheetsMr. Golmon's Population and Resources Part 1
Total questions: 17
Worksheet time: 51mins
A population of lions lives in South Africa. Over 70 years, the size of the lion population increased. What best explains the increase in the size of the lion population?
a lot of lions were born and none died.
The lion population is always increasing because no animal eats a lion.
There were more births than there were deaths.
There were fewer births and more deaths in the populations.
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.
A group of one type of animal that lives in an ecosystem is better known as a...
consumer
stability
resource
population
Over the last 100 years, the human population has dramatically increased. What is the reason for this increase?
Humans have access to more energy storage molecules so humans have more offspring.
Humans haven't increased in population. That's a lie. The human population is stabile.
More deaths than births is basically what happened in the last 100 years.
The population has been stable despite having an increase in resources.
The population of mice is a ______________ for wild cats.
consumer population
resource population
population
ecosystem
Why do animals eat other animals?
They don't know any better.
Animals don't have feelings.
Animals need energy storage molecules.
Animals get energy directly from the sun.
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?
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.
Over the last 1000 years, the population of ferrets in New Zealand hasn't changed. What word would best describe the population of ferrets?
Consumers
Ecosystem
Population
Stability
What word describes the rivalry between animals as they search and collect energy storage molecules?
friendship
mutualism
competition
parasite
Most of our energy comes from producers that are organisms that produce energy from the sun. Which is an example of a producer?
bacteria
ants
grass
viruses
Beetles are eaten by mice. Mice are eaten by hawks. The beetles are the _______________ of the mice, just like the mice relationship to the hawk.
consumer population
resource population
predator
ecosystem
This word describes all of the interactions between living and non-living things in an area. What word is this?
ecosystem
competition
reproduction
population
The most important activity that organisms use their energy storage molecules for is _____________.
competition
hibernation
reproduction
migration
The Sockeyed Salmon of Alaska use all of their stored energy for reproduction and then they ___________.
swim back to the ocean.
take care of their eggs that will soon become fish.
hunt for energy storage molecules.
die from exhaustion.
