Multiple Choice Quiz

Please answer all questions


1	The dominant species in a terrestrial pioneer community are
		A)	grasses.
		B)	beetles.
		C)	lichens.
		D)	conifers.
		E)	none of the above.


2	Which is not a characteristic of a climax community?
		A)	tends to have a stable mix of species
		B)	rapid changes in energy balance
		C)	more organisms than a successional community
		D)	increasing complexity and energy efficiency
		E)	all of the above are characteristics of a climax community


3	One of the key factors that pushes the successional process along toward a climax community in aquatic ecosystems is sedimentation.
		A)	True
		B)	False


4	The major difference between primary and secondary succession is that secondary succession generally takes longer to reach a climax community stage than does primary succession.
		A)	True
		B)	False


5	Temperature and precipitation are the two major non-biological factors that influence the type of biome that is present in any particular geographic area.
		A)	True
		B)	False


6	Which of the following is not an example of a biome?
		A)	taiga
		B)	grassland
		C)	savanna
		D)	desert
		E)	all of the above are examples of biomes


7	Deserts have limited species diversity because they are always so hot and dry.
		A)	True
		B)	False


8	Which of the following is not a characteristic of the tropical rainforest biome?
		A)	soils with low levels of nutrients
		B)	highest number of species of all biomes
		C)	high rainfall
		D)	low temperature
		E)	makes poor farmland if cleared


9	Which of the following is a typical characteristic of a taiga biome?
		A)	numerous deciduous trees, few conifers
		B)	large number of species that stay all year
		C)	few reptiles and amphibians
		D)	ability to withstand prolonged high temperatures
		E)	all of the above are typical adaptations for a taiga biome


10	Which is an example of a marine ecosystem?
		A)	estuary
		B)	pond
		C)	lake
		D)	bog
		E)	none of the above


11	Which marine ecosystem has the highest level of nutrients?
		A)	benthic
		B)	pelagic
		C)	estuary
		D)	lake
		E)	bog


12	Which of the following is not a primary determinant of lake productivity?
		A)	temperature
		B)	predation
		C)	depth
		D)	nutrient level
		E)	none of the above determine lake productivity


13	If a lake has a high level of organic material that is broken down by bacteria and fungi in the water, then the lake will most likely have a low biochemical oxygen demand.
		A)	True
		B)	False

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