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WorksheetsEcology Quiz #2 Review 5a, 5c, 5e
Total questions: 39
Worksheet time: 1hrs 19mins
The diagram shows a food web.
What would most likely happen to the food web if the amount of grass drastically decreased?
Only the rabbit would be affected.
The mouse and grasshopper would be affected.
The grasshopper, mouse, and shrew would be affected.
The entire food web would be affected.
An arctic food web is shown. Suppose that the lemming population is removed from the web. Which of the following would be a likely short-term effect of this change?
The arctic fox population will increase.
The polar bear population will increase.
The caribou population will decrease.
The snowy owl population will decrease.
A team of ecologists observed feeding patterns of several populations in the desert. Which of the following best explains the difference in the amount of available energy in the trophic levels of the desert ecosystem?
There is less energy in the producers because they are at the bottom.
There is more energy in the producers because they provide energy for all the consumers in the ecosystem.
There is more energy available in the tertiary consumers because they need the energy to hunt.
There is more energy in the level containing the top predators because they are larger in size.
Using the everglades energy pyramid provided, which of the following statements describes the transfer of energy in this pyramid. Energy is transferred from ________ .
from the grass, to the marsh rabbits, back to the grass
from the Florida panther, to the gray fox, to the marsh rabbits
from the grass, to the marsh rabbits, to the gray fox, to the Florida panther
from the Florida panther, to the gray fox, to the marsh rabbits, to the grass
Which two organisms compete for the rabbit for energy?
Mouse and Tree
Owl and Goat
Wildcat and Jackal
Lion and Jackal
What would happen to this food chain if we doubled the population of the rabbits?
The populations of the snakes and hawks would also increase.
The populations of the grass, snakes, and hawks would decrease.
The grass population would decrease. The snake and hawk population would increase.
The grass and hawk population would decrease. The snake population would increase.
Which most likely caused the rabbit population (light green line) to decrease over the first time unit (0 to 1) in the graph?
A disease in the rabbit population
A decrease in the amount of grass available
A decreasing population of hawks
A higher population of snakes than normal
Plants curling around a pole or mailbox is an example of:
Phototropism
Germination
Turgor pressure
Thigmotropism
A characteristic or trait that helps an organism survive in its environment is a/an (a)
Variation in (a) would best help bison survive a harsh winter
Why don't populations grow indefinitely?
limiting factors
only biotic factors
only abiotic factors
none of the above
In a forest, the carrying capacity for squirrels is about 100. If humans cut down part of the forest to build houses, what will happen to the carrying capacity for the squirrels?
it will increase
it will decrease
it will stay the same
This graph shows ....
When one population increases, the other decreases.
When one population decreases, the other increases.
When one population increases, the other increases instantly.
When one population increases, it causes the other to increases shortly after.
An environment can support only as many organisms as the available energy, minerals, and oxygen will allow. Which term is best described by this statement?
Biological Feedback
Carrying Capacity
Homeostatic Control
Biological Diversity
On which day did the population represented in the graph below reach the carrying capacity of the ecosystem?
Day 11
Day 8
Day 3
Day 5
What happens if a population grows past its carrying capacity?
The population keeps growing
The population starts to die off
The entire species will go extinct
The carrying capacity just increases
This may cause a population to increase
increase of food supply
removal of predators
removal of disease
all of these
What is the carrying capacity of the graph?
around 500
more than 800
less than 300
around 700
Natural disasters can be considered limiting factors.
true: density independent limiting factors
false; natural disasters are not limiting factors
true: density dependent limiting factors
false: because Mrs. Schaffer said
A lion and a cheetah attempt to occupy the same niche. The more aggressive lion survives; the cheetah does not.
Density-Dependent: Competition
Density-Independent: Competition
Density-Dependent: Predator-Prey
Density-Independent: Predator-Prey
Coyotes cross the winter pack ice and enter Newfoundland. The moose population starts to decline.
Density-Dependent: Competition
Density-Independent: Competition
Density-Dependent: Predator-Prey
Density-Independent: Predator-Prey
Due to severe overcrowding in an Asian village, many children do not survive to reach adulthood.
Density-Dependent: Disease
Density-Independent: Disease
A severe frost wipes out 50% of the coffee crop in Brazil.
Density-Dependent
Density-Independent
A severe flood in the Red River Valley causes a decline in the deer population.
Density-Dependent
Density-Independent
