Question 1

Cyanobacteria are one of only a few organisms able to use nitrogen gas to make organic matter.

Accepted Answer

A) True 
 B)False

Question 2

There are no bacteria that are capable of photosynthesis.

Accepted Answer

A) True 
 B)False

Question 3

Bacterioplankton fall typically to which of the following size ranges?

Accepted Answer

A)  1-2 cm 
B)  1-2 mm 
C)  1-2 μm 
D)  1-2 nm 
E)  1-2 pm 
A)  1-2 cm 
B)  1-2 mm 
C)  1-2 μm 
D)  1-2 nm 
E)  1-2 pm

Question 4

Sargassum is the only large planktonic seaweed.

Accepted Answer

A) True 
 B)False

Question 5

Bottom-up control of primary productivity refers to control by all of the following except ________.

Accepted Answer

A)  light 
B)  grazing 
C)  nutrients 
D)  temperature 
E)  salinity 
A)  light 
B)  grazing 
C)  nutrients 
D)  temperature 
E)  salinity

Question 6

Gross primary production is the rate of production of organic material by photosynthesis required for both the respiration of the plants or algae and the production of new material.

Accepted Answer

A) True 
 B)False

Question 7

The Redfield Ratio is ________.

Accepted Answer

A)  N:C:P 106:16:1 
B)  P:C:N 106:16:1 
C)  C:P:N 106:16:1 
D)  C:N:P 106:16:1 
E)  P:N:C 106:16:1 
A)  N:C:P 106:16:1 
B)  P:C:N 106:16:1 
C)  C:P:N 106:16:1 
D)  C:N:P 106:16:1 
E)  P:N:C 106:16:1

Question 8

Productivity tends to be higher in the open ocean than the coastal ocean.

Accepted Answer

A) True 
 B)False

Question 9

At low latitudes, primary production is controlled more by the seasonality of the sunlight than by the availability of nutrients.

Accepted Answer

A) True 
 B)False

Question 10

High-nutrient, low chlorophyll a (HNLC) regions include ________.

Accepted Answer

A)  the subarctic Pacific 
B)  the North Atlantic 
C)  the Indian Ocean 
D)  the Gulf Stream 
E)  the Gulf of Mexico 
A)  the subarctic Pacific 
B)  the North Atlantic 
C)  the Indian Ocean 
D)  the Gulf Stream 
E)  the Gulf of Mexico

Question 11

Approximately 15 percent of the world's ocean area produces eighty-five percent of the ocean's harvest.

Accepted Answer

A) True 
 B)False

Question 12

At low (tropical) latitudes, phytoplankton blooms are typically most limited by ________.

Accepted Answer

A)  light 
B)  temperature 
C)  grazing 
D)  nutrients 
A)  light 
B)  temperature 
C)  grazing 
D)  nutrients

Question 13

In temperate waters, the timing of the phytoplankton bloom is influenced by ________.

Accepted Answer

A)  light intensity 
B)  inorganic nutrient concentrations 
C)  stability of the water column 
D)  zooplankton abundance 
E)  All of these are correct. 
A)  light intensity 
B)  inorganic nutrient concentrations 
C)  stability of the water column 
D)  zooplankton abundance 
E)  All of these are correct.

Question 14

Which compound does not serve as a pigment in phytoplankton?

Accepted Answer

A)  chlorophyll c 
B)  chlorophyll a 
C)  fucoxanthin 
D)  hemoglobin 
E)  phycoerythrin 
A)  chlorophyll c 
B)  chlorophyll a 
C)  fucoxanthin 
D)  hemoglobin 
E)  phycoerythrin

Question 15

Diatoms are able to ________.

Accepted Answer

A)  form chains to help floating 
B)  store oil to reduce their density 
C)  produce two flagella that provide motility and reduce sinking 
D)  form chains to help floating and store oil to reduce their density 
E)  form chains to help floating, store oil to reduce their density, and produce two flagella that provide motility and reduce sinking 
A)  form chains to help floating 
B)  store oil to reduce their density 
C)  produce two flagella that provide motility and reduce sinking 
D)  form chains to help floating and store oil to reduce their density 
E)  form chains to help floating, store oil to reduce their density, and produce two flagella that provide motility and reduce sinking

Question 16

The dominant phytoplankton in the open ocean are members of the picoplankton.

Accepted Answer

A) True 
 B)False

Question 17

The richest fishing areas of the world are mostly located ________.

Accepted Answer

A)  in waters where coral reefs are common 
B)  in waters where equatorial upwelling takes place 
C)  in open waters far from coasts 
D)  in waters where coastal upwelling takes place 
E)  in waters around Antarctica and in the Arctic 
A)  in waters where coral reefs are common 
B)  in waters where equatorial upwelling takes place 
C)  in open waters far from coasts 
D)  in waters where coastal upwelling takes place 
E)  in waters around Antarctica and in the Arctic

Question 18

Harmful algal blooms can be triggered by ________.

Accepted Answer

A)  nutrient runoff from land 
B)  high-salinity water 
C)  temperature and light combinations 
D)  disturbing cells buried in the sediments 
E)  All of these are correct. 
A)  nutrient runoff from land 
B)  high-salinity water 
C)  temperature and light combinations 
D)  disturbing cells buried in the sediments 
E)  All of these are correct.

Question 19

A food web is ________.

Accepted Answer

A)  a net for trapping marine organisms 
B)  a plan of interactive food chains and energy 
C)  an inverse trophic pyramid 
D)  used only with herring life histories 
E)  a diagram of an organism's life history 
A)  a net for trapping marine organisms 
B)  a plan of interactive food chains and energy 
C)  an inverse trophic pyramid 
D)  used only with herring life histories 
E)  a diagram of an organism's life history

Question 20

Salt-tolerant plants include cordgrasses and mangroves.

Accepted Answer

A) True 
 B)False

Cyanobacteria are one of only a few organisms able to use nitrogen gas to make organic matter.

There are no bacteria that are capable of photosynthesis.

Bacterioplankton fall typically to which of the following size ranges?

Sargassum is the only large planktonic seaweed.

Bottom-up control of primary productivity refers to control by all of the following except ________.

Gross primary production is the rate of production of organic material by photosynthesis required for both the respiration of the plants or algae and the production of new material.

The Redfield Ratio is ________.

Productivity tends to be higher in the open ocean than the coastal ocean.

At low latitudes, primary production is controlled more by the seasonality of the sunlight than by the availability of nutrients.

High-nutrient, low chlorophyll a (HNLC) regions include ________.

Approximately 15 percent of the world's ocean area produces eighty-five percent of the ocean's harvest.

At low (tropical) latitudes, phytoplankton blooms are typically most limited by ________.

In temperate waters, the timing of the phytoplankton bloom is influenced by ________.

Which compound does not serve as a pigment in phytoplankton?

Diatoms are able to ________.

The dominant phytoplankton in the open ocean are members of the picoplankton.

The richest fishing areas of the world are mostly located ________.

Harmful algal blooms can be triggered by ________.

A food web is ________.

Salt-tolerant plants include cordgrasses and mangroves.

The Water Planet

Earth Structure and Plate Tectonics

The Sea Floor and Its Sediments

The Physical Properties of Water

The Chemistry of Seawater

The Atmosphere and the Oceans

Ocean Structure and Circulation

The Waves

The Tides

Coasts, Beaches, and Estuaries

The Living Ocean

The Nekton: Swimmers of the Sea

The Benthos: Living on the Sea Floor

Environmental Issues

The Oceans and Climate Disruption

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Exam 12: The Plankton, Productivity, and Food Webs

Cyanobacteria are one of only a few organisms able to use nitrogen gas to make organic matter.

There are no bacteria that are capable of photosynthesis.

Bacterioplankton fall typically to which of the following size ranges?

Sargassum is the only large planktonic seaweed.

Bottom-up control of primary productivity refers to control by all of the following except ________.

Gross primary production is the rate of production of organic material by photosynthesis required for both the respiration of the plants or algae and the production of new material.

The Redfield Ratio is ________.

Productivity tends to be higher in the open ocean than the coastal ocean.

At low latitudes, primary production is controlled more by the seasonality of the sunlight than by the availability of nutrients.

High-nutrient, low chlorophyll a (HNLC) regions include ________.

Approximately 15 percent of the world's ocean area produces eighty-five percent of the ocean's harvest.

At low (tropical) latitudes, phytoplankton blooms are typically most limited by ________.

In temperate waters, the timing of the phytoplankton bloom is influenced by ________.

Which compound does not serve as a pigment in phytoplankton?

Diatoms are able to ________.

The dominant phytoplankton in the open ocean are members of the picoplankton.

The richest fishing areas of the world are mostly located ________.

Harmful algal blooms can be triggered by ________.

A food web is ________.

Salt-tolerant plants include cordgrasses and mangroves.

The Water Planet

Earth Structure and Plate Tectonics

The Sea Floor and Its Sediments

The Physical Properties of Water

The Chemistry of Seawater

The Atmosphere and the Oceans

Ocean Structure and Circulation

The Waves

The Tides

Coasts, Beaches, and Estuaries

The Living Ocean

The Nekton: Swimmers of the Sea

The Benthos: Living on the Sea Floor

Environmental Issues

The Oceans and Climate Disruption

Filters