Ecology/Environmental: The Strickland Challenge Test 2 Question Preview (ID: 47860)
Populations, Communities, Symbiosis, Succession And Food Webs.
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Which of the following would most likely lead to an increase in field mouse population?
a) the arrival of another species that eats the same thing as the field mouse
b) the presence of a greater number of predator snakes
c) the disappearance of a species of bird that preys on the mouse
d) the lack of adequate rainfall for plants in the mouse's habitat
Which of the following would explain why human population is growing rapidly?
a) Emigration is rising while immigration is declining
b) The birth rate is declining while the death rate is increasing
c) Immigration and birth rates are increasing
d) Emigration and death rates are increasing
Ticks carry bacteria that cause lyme disease. TIcks do not get the disease, but they can transfer the bacteria to humans who can get the disease. What is the relationship among the humans, bacteria, and ticks...
a) bacteria and tick is competition, ticks and humans is predation
b) bacteria and ticks is competition, ticks and humans is parasitism
c) bacteria and ticks is commensalism, ticks and humans is parasitism
d) bacteria and ticks is commensalism, ticks and humans is predation
Two wild stallions fighting over an available mare is an example of
a) parasitism
b) predation
c) interspecific competition
d) intraspecific competition
In an area two species of lizards compete for the same food. One stays within a few meters of the ground to search for insects while one lives among the higher branches in the trees. What is this an example of:
a) resource partitioning
b) intraspecific competition
c) density independent factor
d) parasitism
Lions prides are fairly spaced throughout an ecosystem due to their territorial nature. This is an example of what type of population distribution:
a) random
b) linear
c) uniform
d) clumped
A glacier melts and reveals a previously uninhabited layer of rock. Which type of succession would take place?
a) primary succession
b) secondary succession
c) tertiary succession
d) habitat fragmention
Tornadoes and Hurricanes wiping out entire populations of species would be considered to be:
a) examples of tertiary succession
b) density independent factors
c) density dependent factors
d) exponential factors
In which of the following ways do producers in an ecosystem obtain energy?
a) by consuming other producers
b) by living parasiticallly on animals
c) by using sunlight to make sugars
d) be decomposing dead organisms
Which of the following correctly compares primary and secondary succession:
a) secondary succession takes longer because the soil is extremely damaged
b) primary succession takes longer because soil must be created
c) only secondary succession will ever reach a climax community
d) Primary succession ends with higher biodiversity than secondary succession
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