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Ecology 3
Test Description: Biomes/populations
Instructions: Answer all questions to get your test result.
1) The symbiotic relationship between a flower and the insect that feeds on its nectar is an example of
A
parasitism
B
predation
C
commensalism
D
mutualism
2) What is one difference between primary and secondary succession?
A
Secondary succession begins with lichens and primary succession begins with trees
B
Primary succession is slow and secondary succession is rapid
C
Secondary succession begins on soil and primary succession begins on newly exposed surfaces
D
Primary succession modifies the environment and secondary succession does not
3) Which biome is characterized by very low temperatures, little precipitation, and permafrost?
A
tundra
B
temperate forest
C
desert
D
tropical dry forest
4) Which of the following is NOT one of the factors that play a role in population growth rate?
A
emigration
B
death rate
C
demography
D
immigration
5) There are 150 Saguaro cactus plants per square kilometer in a certain area of Arizona desert. To which population characteristic does this information refer?
A
geographic distribution
B
population density
C
growth rate
D
age structure
6) The movement of organisms into a given area from another area is called
A
immigration
B
population shift
C
carrying capacity
D
emigration
7) Which are two ways a population can decrease in size?
A
low birth rate and emigration
B
emigration and high birthrate
C
immigration and emigration
D
high death rate and immigration
8) The various growth phases through which most populations go are represented on a (an)
A
exponential growth curve
B
logistic growth curve
C
population curve
D
normal curve
9) A biotic or an abiotic resource in the environment that causes population size to decrease is a
A
limiting factor
B
limiting nutrient
C
carrying capacity
D
growth factor
10) If a population grows larger than the carrying capacity of the environment, the
A
death rate must fall
B
death rate may rise
C
birth rate may rise
D
birthrate must fall
*select an answer for all questions
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