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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
both are harmed by the interaction
B
one benefits and the other is unaffected by the interaction
C
both benefit from the interaction
D
one benefits and one is harmed by 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
predation
B
parasitism
C
mutualism
D
commensalism
3) Which of the following abiotic factors is most likely to influence the makeup of an ecosystem?
A
a change of seasons from spring to summer
B
a disease that attacks a tertiary consumer species
C
a disease that destroys the levels of a certain tree
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
producers
B
herbivores
C
primary consumers
D
the sun
5) Few food chains have more than five levels. This is because....
A
tertiary consumers can eat only secondary consumers
B
there are too many types of producers to separate them into another level
C
very little energy is available for a consumer's use beyond four levels
D
most secondary consumers have only one type of predator
6) Which of the following occurs during the composting process?
A
biomass changes the sun's energy to chemical energy
B
biomass decays and rots, so its energy is no longer useful
C
decomposers break down dead plant and animal matter into nutrients that provide chemical energy
D
decomposers make the chemical energy in biomass available to plants
7) Which factor contributes the most to the stability of the biotic factors in an ecosystem?
A
biodiversity
B
rainfall
C
temperature
D
human activity
8) Why wouldn't you expect to find woodpeckers in a grassland biome?
A
woodpeckers need food and shelter in the trees, which grasslands don't have many of
B
grasslands are too cold for woodpeckers to survive
C
woodpeckers need to live in a biome where there's little rain
D
grasslands are too hot for woodpeckers to survive
9) Which of the following is a valid hypothesis?
A
no insect in the world has four eyes
B
heat moves more quickly through metals than nonmetals
C
how does the human heart pump blood to the rest of the body
D
geology is the most interesting field of science
10) Which of the following tools would be the most useful in observing the craters on the moon?
A
a telescope
B
a computer
C
a hand lens
D
a microscope
*select an answer for all questions
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