Levels of Organization
Ecosystems
Relationships
Flow of Energy
Trophic Levels
100
The chart below shows three ecological terms used to describe levels of organization on Earth.
Order the following terms from largest to smallest
Explain why
C, A, B
100
One of the best ways to represent the interdependence of all of the organisms in this ecosystem is
A) an evolutionary tree
B) a food chain
C) an electrophoresis gel
D) a food web
D) A food web
100
An example of competition between members of two different species is
A) mold growing on a dead tree that has fallen in the forest
B) purple loosestrife plants growing in the same wet areas as cattail plants
C) a coyote feeding on the remains of a deer that died of starvation
D) two male turkeys displaying mating behaviors to attract a female turkey
B) purple loosestrife plants growing in the same wet areas as cattail plants
100
Wombats are classified as herbivores because they can
Gum trees, Kangaroo grasses and sedges, Eucalyptus trees
100
The diagram represents trophic levels in an ocean environment.
Organisms in the second trophic levels can be described as
Herbivores or primary consumers because they get energy from the producers
200
The portion of Earth in which all life exists is known as
Biosphere
200
Which activity would eventually result in a stable ecosystem?
A) deforestation in an area to increase space for the species living there
B) mowing a large field so it can be used for recreation
C) allowing native plants to grow undisturbed in an abandoned field
D) spraying pesticides on a field at the end of each growing season
C) allowing native plants to grow undisturbed in an abandoned field
200
Mistletoe is an evergreen shrub that can produce most of its own food. Often, mistletoe can be found living on trees and taking water and nutrients away from the tissues of the trees.
The relationship between mistletoe and trees is an example of
Parasitism
200
Which process is represented in the diagram below?
A) energy flow
B) biological evolution
C) cellular communication
D) ecological succession
D) ecological succession
200
Which group of organisms is missing from this energy pyramid? Which trophic level is missing?
Decomposers. They break down dead organisms.
300
The diagram below represents many species of plants and animals and their surroundings.
Which ecological level is represented in this diagram? How do you know?
Ecosystem because it includes the living things (biotic factors) and their surroundings (abiotic)
300
One characteristic of a stable ecosystem is
A) a high number of predators
B) an interdependence of organisms
C) a lack of biodiversity
D) an increase in human interference
B) an interdependence of organisms
300
The diagram below represents a remora fish attached to a shark.
A remora fish has an adhesive disk or sucker on its head, which it uses to attach itself to larger fishes, such as sharks. This attachment causes the shark no harm. The remora fish eat scraps of food that the sharks drop as they feed. This is an example of
Commensalism
300
What is the primary source of energy in this environment?
The sun
300
The diagram below represents an energy pyramid.
Which type of organism could occupy levels B, C, and D of this energy pyramid?
Consumers
400
An aquarium ecosystem is shown below.
A community in this aquarium consists of the
Explain why
Snails, Plants , fish because a community includes all living things
400
Due to overfishing, the number of fish in the ocean could drastically decrease. This will cause
A) an increase in the stability of the oceans
B) an increase in the salt content of the oceans
C) a decrease in the stability of the oceans
D) a decrease in the oxygen available in the oceans
C) a decrease in the stability of the oceans
400
Base your answer on the diagram below and on your knowledge of biology.
Which term belongs in area A?
A) mutualism
B) prey
C) saprophytism
D) host
A) mutualism
400
A food web is represented below.
Which organism would receive the greatest amount of transferred solar energy?How do you know?
Grasses because it is the producer.
400
The diagram below represents relationships in an ecosystem.
Which organisms are secondary consumers?Why?
The snake and the mountain lion because they eat primary consumers.
500
The diagram below shows a milkweed plant and some of the insects that live on it or visit it.
Which term best describes the group of organisms in the diagram?
A community
500
Base your answer on the information and graph below and on your knowledge of biology. The graph shows the number of animals in a population throughout the course of a year. The population migrated into the area at the beginning of 2011.
The graph can best be used to illustrate
The graph can best be used to illustrate
A) a food chain
B) ecological succession
C) natural selection
D) carrying capacity
D) carrying capacity
500
Which row in the chart below shows a direct relationship that can exist between two living organisms?
2) Predator- Prey
500
Some organisms in an ecosystem are represented in the pyramid below.
In the pyramid, the arrows labeled X represent
The loss of energy in the form of heat
500
Base your answer on the diagram below and on your knowledge of biology. The diagram represents a food web in an ecosystem.
Which organisms are carnivores? Which organisms are herbivores? Which are autotrophs?
Carnivores- Hawk Owl Snake Frog
Herbivores- Caterpillar Rabbit Mice Grasshopper
Autotroph- Wheat Clover Dandelions