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Online Quizzing
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1

Only about ____ percent of the available energy is transferred between each trophic level.
A)5
B)10
C)15
D)20
E)25
2

The level of productivity of the open ocean is equivalent to this region on land:
A)rain forests
B)pastures
C)agricultural fields
D)deserts
E)deciduous forests
3

The base of the food chain in the oceans relies on this process:
A)photosynthesis
B)agrisynthesis
C)chemosynthesis
D)carbosynthesis
E)a or c depending on the area
4

Primary productivity depends on:
A)sunlight
B)nutrients
C)carbon dioxide gas
D)water
E)all of the above
5

The photic zone has an average depth of _________ m.
A)50 - 100
B)1000 - 1200
C)500 - 750
D)10 - 40
E)150 - 200
6

The limiting factor for primary productivity at high latitudes is:
A)temperature
B)nutrient supply
C)amount of dissolved gas
D)availability and intensity of sunlight
E)stability of the water column
7

Zones of upwelling:
A)are regions of high productivity
B)are regions of low productivity
C)areas that typically have high nutrient concentrations
D)a and c
E)b and c
8

The largest mass of organic material produced in the oceans comes from:
A)zones of upwelling
B)the eastern sides of ocean basins
C)the open ocean
D)estuaries
E)a and b
9

Respiration consumes:
A)carbon dioxide
B)oxygen
C)water
D)phosphorus
E)nitrogen
10

The rate of primary productivity in zones of upwelling is about ____ times greater than in the open ocean.
A)5
B)10
C)2
D)20
E)15





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