Question 1

Calanoid copepods are usually

Accepted Answer

A)  In the mesoplankton size range 
B)  In the femtoplankton size range 
C)  In the picoplankton size range 
D)  In the macroplankton size range 
A)  In the mesoplankton size range 
B)  In the femtoplankton size range 
C)  In the picoplankton size range 
D)  In the macroplankton size range A

Question 2

Siphonophores are notable because

Accepted Answer

A)  They are planktonic gelatinous carnivores 
B)  They are polymorphic colonies 
C)  They often have gas-filled floats 
D)  All of the above 
A)  They are planktonic gelatinous carnivores 
B)  They are polymorphic colonies 
C)  They often have gas-filled floats 
D)  All of the above D

Question 3

Nanoplankton have a size range of

Accepted Answer

A)  1-2 micrometers 
B)  2-20 micrometers 
C)  20-200 micrometers 
D)  < 1 micrometer 
A)  1-2 micrometers 
B)  2-20 micrometers 
C)  20-200 micrometers 
D)  < 1 micrometer B

Question 4

Calanoid copepods are most closely related to

Accepted Answer

A)  Siphonophores 
B)  Ctenophora 
C)  Krill 
D)  Pteropods 
A)  Siphonophores 
B)  Ctenophora 
C)  Krill 
D)  Pteropods

Question 5

Cyanobacteria

Accepted Answer

A)  Are abundant only in estuaries 
B)  Are capable of nitrogen fixation 
C)  Cannot live in stagnant waters 
D)  Only occur in chains of cells 
A)  Are abundant only in estuaries 
B)  Are capable of nitrogen fixation 
C)  Cannot live in stagnant waters 
D)  Only occur in chains of cells

Question 6

During asexual reproduction in diatoms

Accepted Answer

A)  Generation time decreases steadily 
B)  Part of the silica shell is cast off with each cell division 
C)  Cell size decreases steadily to a threshold 
D)  Uniquely among phytoplankton they have resting stages on the bottom 
A)  Generation time decreases steadily 
B)  Part of the silica shell is cast off with each cell division 
C)  Cell size decreases steadily to a threshold 
D)  Uniquely among phytoplankton they have resting stages on the bottom

Question 7

Diatoms have a skeleton made of

Accepted Answer

A)  Silica 
B)  An organic matrix 
C)  Calcium carbonate 
D)  Titanium 
A)  Silica 
B)  An organic matrix 
C)  Calcium carbonate 
D)  Titanium

Question 8

Arrow worms

Accepted Answer

A)  Feed upon phytoplankton 
B)  Maintain symbiotic algae 
C)  Feed upon bacteria 
D)  Are carnivores 
A)  Feed upon phytoplankton 
B)  Maintain symbiotic algae 
C)  Feed upon bacteria 
D)  Are carnivores

Question 9

Siphonophores

Accepted Answer

A)  Have many species of deeper swimming forms 
B)  Always have a float that suspends them from the surface 
C)  Are meroplanktonic 
D)  Feed strictly on bacteria 
A)  Have many species of deeper swimming forms 
B)  Always have a float that suspends them from the surface 
C)  Are meroplanktonic 
D)  Feed strictly on bacteria

Question 10

Cyanobacteria

Accepted Answer

A)  Only occur as single cells in anoxic surface waters 
B)  Only occur as thread like colonies in the tropics 
C)  Occur in a wide array of morphologies 
D)  Desperately need nitrogen from the dissolved state in surface waters 
A)  Only occur as single cells in anoxic surface waters 
B)  Only occur as thread like colonies in the tropics 
C)  Occur in a wide array of morphologies 
D)  Desperately need nitrogen from the dissolved state in surface waters

Question 11

Plankton that spend part of their life cycle in the water column, but live as adults in the benthos, are

Accepted Answer

A)  Mixoplankton 
B)  Meroplankton 
C)  Pleuston 
D)  Holoplankton 
A)  Mixoplankton 
B)  Meroplankton 
C)  Pleuston 
D)  Holoplankton

Question 12

Foraminifera and radiolaria share the following

Accepted Answer

A)  They both secrete tests made of calcium carbonate 
B)  They both engulf food items with pseudopodia 
C)  They both lack sexual reproduction 
D)  They both are found only in high latitudes 
A)  They both secrete tests made of calcium carbonate 
B)  They both engulf food items with pseudopodia 
C)  They both lack sexual reproduction 
D)  They both are found only in high latitudes

Question 13

PCR

Accepted Answer

A)  Is a method to recover plankton in coral reefs 
B)  Is a method used to amplify DNA, using small sequences as templates 
C)  Is a new method used to identify plankton by means of immunological markers 
D)  Will soon be used for the first time to identify marine microbes 
A)  Is a method to recover plankton in coral reefs 
B)  Is a method used to amplify DNA, using small sequences as templates 
C)  Is a new method used to identify plankton by means of immunological markers 
D)  Will soon be used for the first time to identify marine microbes

Question 14

Dinoflagellates

Accepted Answer

A)  Usually have two flagellae used for locomotion 
B)  Include species involved in toxic algal blooms 
C)  May be heterotrophic 
D)  All of the above 
A)  Usually have two flagellae used for locomotion 
B)  Include species involved in toxic algal blooms 
C)  May be heterotrophic 
D)  All of the above

Question 15

Calanoid copepods

Accepted Answer

A)  Are restricted to the Pacific Ocean 
B)  Are the most abundant zooplankton in the sea 
C)  Live under conditions only dominated by very low Reynolds number 
D)  Live under conditions only dominated by very high Reynolds number 
A)  Are restricted to the Pacific Ocean 
B)  Are the most abundant zooplankton in the sea 
C)  Live under conditions only dominated by very low Reynolds number 
D)  Live under conditions only dominated by very high Reynolds number

Question 16

Viruses attack and burst cells in the process known as

Accepted Answer

A)  Infection 
B)  Viral lag phase 
C)  Lysis 
D)  Bacteriophage 
A)  Infection 
B)  Viral lag phase 
C)  Lysis 
D)  Bacteriophage

Question 17

Many planktonic organisms have excesses of ammonium, sodium, and chloride relative to sea water because

Accepted Answer

A)  They must regulate ionic concentrations in estuaries 
B)  They evolved in the deep sea and retain the chemistry of the deep sea 
C)  These excesses are substitutions of ions of lower density, which counteracts sinking 
D)  All of the above 
A)  They must regulate ionic concentrations in estuaries 
B)  They evolved in the deep sea and retain the chemistry of the deep sea 
C)  These excesses are substitutions of ions of lower density, which counteracts sinking 
D)  All of the above

Question 18

Dinoflagellates

Accepted Answer

A)  Usually appear at the very beginning of the spring 
B)  Need silica and only occur near coasts with silica rich rocks 
C)  Usually do not appear in a phytoplankton bloom until other phytoplankton species become abundance in the later winter-spring 
D)  Only reproduce sexually 
A)  Usually appear at the very beginning of the spring 
B)  Need silica and only occur near coasts with silica rich rocks 
C)  Usually do not appear in a phytoplankton bloom until other phytoplankton species become abundance in the later winter-spring 
D)  Only reproduce sexually

Question 19

Which of the following plankton size classes is the largest?

Accepted Answer

A)  Microplankton 
B)  Picoplankton 
C)  Femtoplankton 
D)  Mesoplankton 
A)  Microplankton 
B)  Picoplankton 
C)  Femtoplankton 
D)  Mesoplankton

Question 20

Planktonic organisms are usually

Accepted Answer

A)  Distributed at random in the water column 
B)  Found only at the air-water interface 
C)  Found near the surface during the day and at depth at night 
D)  Patchily distributed in the water column 
A)  Distributed at random in the water column 
B)  Found only at the air-water interface 
C)  Found near the surface during the day and at depth at night 
D)  Patchily distributed in the water column

Exam 8: Plankton

Calanoid copepods are usually

Siphonophores are notable because

Nanoplankton have a size range of

Calanoid copepods are most closely related to

Cyanobacteria

During asexual reproduction in diatoms

Diatoms have a skeleton made of

Arrow worms

Siphonophores

Cyanobacteria

Plankton that spend part of their life cycle in the water column, but live as adults in the benthos, are

Foraminifera and radiolaria share the following

PCR

Dinoflagellates

Calanoid copepods

Viruses attack and burst cells in the process known as

Many planktonic organisms have excesses of ammonium, sodium, and chloride relative to sea water because

Dinoflagellates

Which of the following plankton size classes is the largest?

Planktonic organisms are usually

Sounding the Deep

The Oceanic Environment

Climate Oscillations and Climate Change

Ecological and Evolutionary Principles of Marine Biology

The Chemical and Physical Environment

Life in a Fluid Medium

Reproduction, Dispersal, and Migration

Marine Vertebrates and Other Nekton

The Open Sea: Distributions and Adaptations

Processes in the Water Column

Productivity, Food Webs, and Global Climate Change

Benthic Microorganisms, Seaweeds, and Sea Grasses

The Diversity of Benthic Marine Invertebrates

Benthic Life Habits

The Tidelands: Rocky Shores, Soft-Substratum Shores, Marshes, Mangroves, Estuaries, and Oyster Reefs

The Shallow Coastal Subtidal: Sea Grass Beds, Rocky Reefs, Kelp Forests, and Coral Reefs

Benthos From the Continental Shelf to the Deep Sea

Polar Marine Biology

Biodiversity and Conservation of the Ocean

Fisheries and Food From the Sea

Environmental Impacts of Industrial Activities and Human Populations

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