NEW
Font size
WorksheetsL.5.3B.3 Removal of Species from Food Web
Total questions: 10
Worksheet time: 5mins
Over a period of seven years, scientists count the number of rabbits and foxes they see in a forest ecosystem. The results of the scientists’ population counts are shown in the graph.
What can be inferred about the rabbit and fox populations?
The fox population decreased over seven years.
The rabbit population increased over seven years.
The rabbit population decreased because the fox population increased.
There is no connection between the rabbit and fox populations.
The southern fox squirrel is a species of squirrel that lives in South Carolina.
The southern fox squirrel makes its habitat in mature pine and pine-hardwood trees. What would most likely happen to the southern fox squirrel population if the pine and pine-hardwood population was to be cut down for farmland?
The southern fox squirrel population will decrease because of the loss of its habitat.
The southern fox squirrel population will increase because of an increase in the food available on the farm.
The southern fox squirrel population will increase because the removal of the tree population will create more space.
The southern fox squirrel population will remain the same after the land has been cleared.
The striped bass is a type of fish that lives in Lake Murray and which the bald eagle consumes as part of its diet.
If all other environmental conditions remain the same, which event would likely occur if the striped bass population was to increase in Lake Murray?
The bald eagle population would increase.
The bald eagle population would decrease.
The bald eagle population would slowly decrease and then sharply increase.
The bald eagle population would remain constant.
The diagram shows a food web of a mountain forest ecosystem.
Which change is most likely to have a positive effect on the population of the Bobcat in the ecosystem?
increase in the population of the Mountain Lion
increase in the population of the Mountain Goat
decrease in the population of the Mouse
decrease in the population of the Rabbit
In an ecosystem, grasshoppers are the main food source for opossums. The opossums are hunted by great horned owls and gray foxes. The population of opossums is reduced due to the spread of a disease.
What effect will the decrease in the opossum population have on other organisms of the ecosystem?
The gray fox population will increase.
The grasshopper population will increase.
The grass cover in the region will increase.
The great horned owl population will increase.
The diagram shows an aquatic food web.
The population of shrimp is reduced due to a sudden change in the climate. Does this decrease have any effect on the population of alligators?
Yes. The alligator feeds on shrimp when other food sources are unavailable.
No. The alligator is the top predator and will be unaffected by the decline of shrimp.
Yes. The population of catfish and pike that are food for the alligator will decrease.
No. The population of organisms on which the alligator feeds would remain the same.
The diagram shows a food web.
What is least likely to reduce the population of the woodlouse?
increase in the population of the shrew
decrease in the population of the centipede
decrease in the population of the ladybug
increase in the population of the greenfly
A simple food web of a mountain ecosystem is shown in the diagram.
What explains the immediate effect of removing the elk population from the ecosystem?
The population of the lion will increase
The population of the bat will decrease.
.The population of the deer will decrease.
The population of the wolf will increase.
The diagram shows a grassland ecosystem.
The grasshopper population decreases due to disease. What change would most likely be observed in the populations of the beetles and snails and why?
They will decrease, as they will feed upon each other.
They will increase, as the owl population will feed on more of the shrew and wood mouse populations.
They will decrease, as the wood mouse and shrew populations will feed on more of them
They will increase, as there will be more of the green plant population for them to feed upon.
The diagram shows the food web of an aquatic ecosystem.
Which population in the food web will be impacted first by a decrease in the large fish population?
aquatic insects
small fish
turtles
water fleas
