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WorksheetsEcology Exam
Total questions: 23
Worksheet time: 17mins
The table shows the various levels of organisms on Earth. If each level is represented by a circle, which figure represent the relationship among these levels of organization?
Which scenario describes a population?
a log providing shelter for beetles, spiders, and snakes
all of the sunfish, bass, and catfish living in a lake
all the mice living in a barn
a squirrel eating acorns
W
X
Y
Z
Rice is a high water demanding wetland crop. Thus, rice will grow best on in soils with low permeability. Examine the chart. Which soil is best for rice cultivation.?
Type I
Type II
Type III
Type IV
What is the overall composition of topsoil?
bacteria, water, and rock particles
minerals, water, humus, rock particles, and air
water, sand, and mud
broken down plant materials, minerals, and air
The graph shows the population of wolves and hare in a grassland. In which year were the habitat of both the wolf and hare MOST LIKELY destroyed by fire?
2004
2005
2008
2009
The diagram shows a forest environment and several organisms that live there. If the rainfall in the area is less than expected what is the most likely impact on the ecosystem?
More deer and rabbit will immigrate into the area.
Water will become a limiting factor for all organisms
The birth rate will increase for rabbit and bird population.
The organisms will adapt in order to survive with less water.
A population of bacteria is growing in a small plastic container for a 48 hour period. They were given unlimited food and water, the lid was put on the container to keep other things out of the environment. Which of the following limiting factors most likely stopped the growth of the bacteria population after 28 hours?
Amount of Space
Amount of Food
Amount of Water
Predator Species
Would the carrying capacity of an area for a species be affected by the other species that live in the same area?
No, each species is separate.
Only if the species in question and the second species eat the same food.
Only in the winter when food and shelter are more scarce.
Yes, all the populations in a community affect each other.
The American alligator and the freshwater crocodile are similar species that feed on fish, amphibians, mammals, and birds. The alligator is found in America. The crocodile is found in Austrailia. Which statement best describes the MOST LIKELY interaction between these two species if they were suddenly living in the same ecosystem?
The alligator would act as a predator to the crocodile.
The crocodile would act as a predator to the alligator.
Both would compete for food resources.
Both would form a mutualistic relationship.
Deer and wolves share the same habitat. If the deer population decreased due to being hunted by man, how would this affect the wolf population?
More wolves would immigrate to the area.
The wolf population would increase.
The wolf population would decrease.
The would population would experience no change.
The graph shows the number of reindeer in a forest from 1970 to 2010. Which point on the graph indicates that the population had been affected by competition among reindeer for a limited food supply?
Point A
Point B
Point C
Point D
The Mississippi River contains waterweeds that are food for the river's crayfish. They crayfish are eaten by mudpuppies and are food for the blue catfish. WHich energy pyramid shows the energy flow in the Mississippi River food chain?
Why are there fewer organisms in each level as you go up the energy pyramid?
There is more energy available at higher levels.
Higher levels have more mean animals.
There is less energy availabe at higher levels.
Coyotes get hungrier.
Which is a more complete model of feeding relationships?
protein building
food map
food web
food chain
According to the pond food web shown, which organism is a producer?
beetles
carp
diatoms
herons
If a disease killed all the mice in the food web shown here, how would that affect the owls and hawks?
Owls would be affected more because they are predators for fewer animals that the hawks.
Hawks would be affected more because they are predators for more animals than the owls.
Since they are both predators of mice, the hawks and the owls would be affected the same.
Since they are both predators of other animals, neither the hawks nor the owls would be affected.
Under which of the following conditions would the global population decrease?
birthrate> death rate
birthrate= death rate
death rate > birthrate
death rate= birthrate
An increase in population-
causes an increase in the need for natural resources.
causes a decrease in the need for natural resources.
causes no change in the need for natural resources.
has never occurred.
A species that is NOT native to a particular region is called-
natural
invasive
endemic
extraordinary
When taken to a new habitat, non-native plants often threaten native plants of this new habitat. Why do they do this?
Non-native plants are able to reproduce rapidly.
Non-native plants cause native animals to relocate.
Non-native plants are able to be used for medicine.
Non-native plants compete with native plants for resources.
Which of the following statements are supported by the Invasion Curve?
The most effective method of eradicating invasive species is to prevent them from becoming established.
When most people become aware of an invasive species, it is already too late to eradicate them.
The cost of invasive species increases from their introduction to the point of public awareness.
All of the above would be supported by the Invasion Curve.
Using the diagram shown, what will happen to the zooplankton if the dead algae disappear from the world?
Their population will increase cecause they do not depend directly on dead algae for energy.
Their population will decrease because they eat animals that depend on dead algae for energy.
Their population will decrease becasue they have fewer dead algae to consume for their energy.
Their population will increase because there will be more bacteria avvailable for energy.
