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Interdependence
Test Description: Ecosystems
Instructions: Answer all questions to get your test result.
1) Competition for food is another interaction that occurs among species. How does competition affect the competing species?
A
one benefits and one is harmed by the interaction
B
both are harmed by the interaction
C
one benefits and the other is unaffected by the interaction
D
both benefit from the interaction
2) Barnecles are crustaceans. The barnacles are transported to new feeding grounds without affecting the whale. This process is an example of...
A
commensalism
B
predation
C
parasitism
D
mutualism
3) Which of the following abiotic factors is most likely to influence the makeup of an ecosystem?
A
a disease that destroys the levels of a certain tree
B
a disease that attacks a tertiary consumer species
C
a change of seasons from spring to summer
D
a long drought that endangers many of the plants
4) Which of the following is the primary source of energy in the food web?
A
primary consumers
B
herbivores
C
the sun
D
producers
5) Few food chains have more than five levels. This is because....
A
very little energy is available for a consumer's use beyond four levels
B
there are too many types of producers to separate them into another level
C
most secondary consumers have only one type of predator
D
tertiary consumers can eat only secondary consumers
6) Which of the following occurs during the composting process?
A
decomposers break down dead plant and animal matter into nutrients that provide chemical energy
B
decomposers make the chemical energy in biomass available to plants
C
biomass decays and rots, so its energy is no longer useful
D
biomass changes the sun's energy to chemical energy
7) Which factor contributes the most to the stability of the biotic factors in an ecosystem?
A
human activity
B
biodiversity
C
temperature
D
rainfall
8) Why wouldn't you expect to find woodpeckers in a grassland biome?
A
grasslands are too cold for woodpeckers to survive
B
woodpeckers need to live in a biome where there's little rain
C
woodpeckers need food and shelter in the trees, which grasslands don't have many of
D
grasslands are too hot for woodpeckers to survive
9) Which of the following is a valid hypothesis?
A
geology is the most interesting field of science
B
no insect in the world has four eyes
C
how does the human heart pump blood to the rest of the body
D
heat moves more quickly through metals than nonmetals
10) Which of the following tools would be the most useful in observing the craters on the moon?
A
a telescope
B
a microscope
C
a hand lens
D
a computer
*select an answer for all questions
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