Quiz 10 OCE 4008 Final Exam Study Guide

____ 1. Which plankton are considered microplankton?

A. Silicoflagellates

B. Dinoflagellates

C. Coccolithophores

D. Cyanobacteria

____ 2. What is the smallest form of plankton?

A. Microplankton

B. Nanoplankton

C. Femtoplankton

D. Picoplankton

____ 3. What makes light absorption in diatoms more effective than just using chlorophyll?

A. Surface-to-volume

B. Microbial loop

C. Frustule perforations

D. Accessory pigments

____ 4. What kind of plankton remains planktonic for its entire life?

A. Holoplankton

B. Meroplankton

C. Mesoplankton

D. Zooplankton

____ 5. What can hinder photosynthetic productivity in the open ocean?

A. Light

B. Carbon dioxide

C. Iron

D. Conservative nutrients

____ 6. Why are marine viruses important?

A. Strong influence on bacterial and algal populations

B. Microbial food web & nutrient cycling

C. Pathogenic

D. All of the above

____ 7. Virus types include all of the following except:

A. DNA

B. RNA

C. Multicellular

D. Double-stranded

____ 8. On average there are __ times more viruses as prokaryotic cells in the biosphere.

A. 2

B. 4

C. 10

D. 20

____ 9. What is the most productive photosynthetic plankton apart from Cyanobacteria?

A. Dinoflagellates

B. Coccolithophores

C. Diatoms

D. Ciliates

____ 10. What is a frustule?

A. The by-product of photosynthesis in diatoms

B. The rigid cell wall of a diatom

C. A microscopic phage that attacks diatoms

D. A small appendage on a cyanobacteria

____ 11. What is usually responsible for a harmful algal bloom?

A. Diatoms

B. Viruses

C. Cyanobactiera

D. Dinoflagellates

____ 12. What do researchers use to directly measure the rate of productivity?

A. Carbon-12

B. Biomass

C. Carbon-14

D. Chloroplasts

____ 13. What new method is being used to calculate productivity by estimating the chlorophyll?

A. Biomass

B. Orbiting satellites

C. Radioactive tagging

D. Light-dark reactions

____ 14. Where is phytoplankton the most productive?

A. Tropical latitudes

B. Temperate latitudes

C. North polar latitudes

D. Equator

____ 15. What season does phytoplankton peak in the northern temperate zone?

A. Spring

B. Summer

C. Autumn

D. Winter

____ 16. In the ocean, viral abundance __________ further offshore and __________ steadily below the thermocline.

A. Decreases; decreases

B. Decreases: increases

C. Increases; decreases

D. Increases; increases

____ 17. The hypothesis that more abundant bacteria are more likely to become infected by viruses is referred it as:

A. Red Queen hypothesis

B. Kill the Winner hypothesis

C. King of the Mountain hypothesis

D. Old friends hypothesis

____ 18. A highly biological productive ocean surface appears chalky; what plankton is likely successful here?

A. Diatoms

B. Dinoflagellates

C. Coccolithophores

D. Isopods

Measuring biomass is not efficient in calculating primary productivity because dense areas can have lower productivity

____ 20. After a plankton bloom, nonconservative nutrients are produced in high levels.

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