OCE1001 Exam 4 Chapter 13 Oceanography and Marine Ecology Examination:
Phytoplankton Blooms, Coastal Upwelling, Thermocline Dynamics,
Biogeochemical Cycling, Primary Productivity, Nutrient Limitation,
Eutrophication, Dead Zones, Trophic Structures, Energy Transfer Efficiency,
Zooplankton Grazing, Autotrophs, Heterotrophs, Suspension Feeding, Deposit
Feeding, Apex Predators, Fisheries Sustainability, Overfishing Impacts, Bycatch
Mitigation, Coral Reef Productivity, Polar and Temperate Ocean Dynamics,
Equatorial Upwelling, Photosynthetic Rates, Chlorophyll Mapping, Satellite
Remote Sensing, Redfield Ratios, Seasonal Bloom Patterns, Ocean Stratification,
Light Attenuation, Dissolved Oxygen Variability, Carbon Sequestration, Marine
Food Web Interactions, and Global Ecosystem Management Exam Questions
Verified and Provided with Complete A+ Graded Rationales Latest Updated 2026
In the Northern Hemisphere, when does the phytoplankton biomass peak in the polar region?
Why?
In the Northern Hemisphere near the pole, phytoplankton biomass peaks in the spring when
the temperature is high enough to melt all the sea ice.
In the Northern Hemisphere near the pole, phytoplankton biomass peaks in the spring when
the sun is high enough in the sky for sunlight to penetrate deep into the water and again in the
fall when tides bring nutrients to the surface.
,In the Northern Hemisphere near the pole, phytoplankton biomass peaks in the spring when
nutrients are delivered to the area by surface currents.
In the Northern Hemisphere near the pole, phytoplankton biomass peaks in the spring when
the sun is high enough in the sky for sunlight to penetrate deep into the water.
In the Northern Hemisphere near the pole, phytoplankton biomass peaks in the spring and
again in the fall when the water temperature is between 40 and 50 degrees Celsius.
In the Northern Hemisphere near the pole, phytoplankton biomass peaks in the spring when
the sun is high enough in the sky for sunlight to penetrate deep into the water.
Which of the following characteristics causes tropical oceans to have a constant, low level of
productivity year round?
Tropical oceans have a constant low level of productivity due to equatorial upwelling.
Tropical oceans have a constant low level of productivity due to the high influx of fresh water
due to rain.
Tropical oceans have a constant low level of productivity due to low salinity.
Tropical oceans have a constant low level of productivity due to the presence of a permanent
thermocline.
Tropical oceans have a constant low level of productivity due to the presence of a permanent
thermocline.
,In the middle latitudes, the spring bloom is controlled by _____ and the fall bloom is controlled
by _____.
Sunlight and nutrients; sunlight
sunlight; sunlight and nutrients
sunlight; nutrients
nutrients and sunlight; nutrients
nutrients; nutrients
nutrients and sunlight; nutrients
Why does coastal upwelling lead to high biological productivity?
It provides a current for phytoplankton to move up in the water column from the deep ocean.
It brings carbonate ions to the surface.
It brings warm, nutrient-rich water to the surface, where phytoplankton reside.
It brings cold, nutrient-rich water to the surface, where phytoplankton reside.
It provides a current for fish to move up in the water column to devour the phytoplankton on
the surface.
, It brings cold, nutrient-rich water to the surface, where phytoplankton reside.
Why does coastal upwelling occur on the west coast of many continents?
This is where Ekman transport moves water to the right of wind direction.
This is where Ekman transport moves water to the left of wind direction.
More nutrients are added to the ocean along the shorelines due to human habitation.
This is where wind direction forces surface water toward the shore.
This is where wind direction forces surface water away from the shore.
This is where wind direction forces surface water away from the shore.
When will coastal upwelling occur in the Northern Hemisphere?
when it is raining and river discharge is maximized
when a sea breeze blows onto land
when winds blow from the south, parallel to shore
when winds blow from the north, parallel to shore
Phytoplankton Blooms, Coastal Upwelling, Thermocline Dynamics,
Biogeochemical Cycling, Primary Productivity, Nutrient Limitation,
Eutrophication, Dead Zones, Trophic Structures, Energy Transfer Efficiency,
Zooplankton Grazing, Autotrophs, Heterotrophs, Suspension Feeding, Deposit
Feeding, Apex Predators, Fisheries Sustainability, Overfishing Impacts, Bycatch
Mitigation, Coral Reef Productivity, Polar and Temperate Ocean Dynamics,
Equatorial Upwelling, Photosynthetic Rates, Chlorophyll Mapping, Satellite
Remote Sensing, Redfield Ratios, Seasonal Bloom Patterns, Ocean Stratification,
Light Attenuation, Dissolved Oxygen Variability, Carbon Sequestration, Marine
Food Web Interactions, and Global Ecosystem Management Exam Questions
Verified and Provided with Complete A+ Graded Rationales Latest Updated 2026
In the Northern Hemisphere, when does the phytoplankton biomass peak in the polar region?
Why?
In the Northern Hemisphere near the pole, phytoplankton biomass peaks in the spring when
the temperature is high enough to melt all the sea ice.
In the Northern Hemisphere near the pole, phytoplankton biomass peaks in the spring when
the sun is high enough in the sky for sunlight to penetrate deep into the water and again in the
fall when tides bring nutrients to the surface.
,In the Northern Hemisphere near the pole, phytoplankton biomass peaks in the spring when
nutrients are delivered to the area by surface currents.
In the Northern Hemisphere near the pole, phytoplankton biomass peaks in the spring when
the sun is high enough in the sky for sunlight to penetrate deep into the water.
In the Northern Hemisphere near the pole, phytoplankton biomass peaks in the spring and
again in the fall when the water temperature is between 40 and 50 degrees Celsius.
In the Northern Hemisphere near the pole, phytoplankton biomass peaks in the spring when
the sun is high enough in the sky for sunlight to penetrate deep into the water.
Which of the following characteristics causes tropical oceans to have a constant, low level of
productivity year round?
Tropical oceans have a constant low level of productivity due to equatorial upwelling.
Tropical oceans have a constant low level of productivity due to the high influx of fresh water
due to rain.
Tropical oceans have a constant low level of productivity due to low salinity.
Tropical oceans have a constant low level of productivity due to the presence of a permanent
thermocline.
Tropical oceans have a constant low level of productivity due to the presence of a permanent
thermocline.
,In the middle latitudes, the spring bloom is controlled by _____ and the fall bloom is controlled
by _____.
Sunlight and nutrients; sunlight
sunlight; sunlight and nutrients
sunlight; nutrients
nutrients and sunlight; nutrients
nutrients; nutrients
nutrients and sunlight; nutrients
Why does coastal upwelling lead to high biological productivity?
It provides a current for phytoplankton to move up in the water column from the deep ocean.
It brings carbonate ions to the surface.
It brings warm, nutrient-rich water to the surface, where phytoplankton reside.
It brings cold, nutrient-rich water to the surface, where phytoplankton reside.
It provides a current for fish to move up in the water column to devour the phytoplankton on
the surface.
, It brings cold, nutrient-rich water to the surface, where phytoplankton reside.
Why does coastal upwelling occur on the west coast of many continents?
This is where Ekman transport moves water to the right of wind direction.
This is where Ekman transport moves water to the left of wind direction.
More nutrients are added to the ocean along the shorelines due to human habitation.
This is where wind direction forces surface water toward the shore.
This is where wind direction forces surface water away from the shore.
This is where wind direction forces surface water away from the shore.
When will coastal upwelling occur in the Northern Hemisphere?
when it is raining and river discharge is maximized
when a sea breeze blows onto land
when winds blow from the south, parallel to shore
when winds blow from the north, parallel to shore
