- 1. What is the primary source of energy for phytoplankton?
A) Chemical energy
B) Seawater
C) Sunlight
D) Volcanic heat
- 2. What is the process of zooplankton feeding on phytoplankton called?
A) Burrowing
B) Grazing
C) Erosion
D) Pollination
- 3. Which organism is considered a primary producer in the plankton community?
A) Shrimp
B) Phytoplankton
C) Herring
D) Jellyfish
- 4. What type of plankton feeds on other plankton as part of the marine food chain?
A) Zooplankton
B) Virioplankton
C) Phytoplankton
D) Bacterioplankton
- 5. What is the dominant form of plankton in highly productive coastal waters?
A) Shrimp
B) Krill
C) Copepods
D) Diatoms
- 6. What is the process by which zooplankton migrate vertically in the water column called?
A) Horizontal dispersion
B) Sedimentation
C) Static suspension
D) Diel vertical migration
- 7. Which of the following is a common feeding strategy of zooplankton?
A) Scavenging
B) Photosynthesis
C) Predation
D) Filter feeding
- 8. What structures do some phytoplankton have that help them regulate their buoyancy?
A) Gas vacuoles
B) Stingers
C) Muscles
D) Eyes
- 9. What is the main gas used by plankton in the process of photosynthesis?
A) Hydrogen
B) Oxygen
C) Nitrogen
D) Carbon dioxide
- 10. What is the term for tiny particles that are transported by ocean currents and provide a surface for plankton to attach to?
A) Mangroves
B) Marine snow
C) Coral reefs
D) Seaweed
- 11. Which of the following is a type of harmful algal bloom caused by excess plankton growth?
A) Green tide
B) Yellow tide
C) Blue tide
D) Red tide
- 12. What is the term used to describe plankton that can move against currents?
A) Nekton
B) Holoplankton
C) Benthos
D) Tychoplankton
- 13. What type of plankton are bacteria that drift in the water column?
A) Bacterioplankton
B) Phytoplankton
C) Zooplankton
D) Virioplankton
- 14. Plankton play a crucial role in the global carbon cycle by performing which process?
A) Chemical weathering
B) Respiration
C) Photosynthesis
D) Decomposition
- 15. Plankton are primarily found in which habitat?
A) Deserts
B) Mountains
C) Aquatic environments
D) Tundras
- 16. Which of the following is not a type of plankton?
A) Phytoplankton
B) Zooplankton
C) Bacterioplankton
D) Jellyfish
- 17. What is the term for plankton that spend only part of their life cycle as part of the plankton community?
A) Meroplankton
B) Bacterioplankton
C) Holoplankton
D) Zooplankton
- 18. Which of the following is a type of phytoplankton that can produce bioluminescence?
A) Dinoflagellates
B) Flatworms
C) Roundworms
D) Amoebas
- 19. What is the general term for small marine organisms that drift with ocean currents?
A) Krill
B) Plankton
C) Shark
D) Tuna
- 20. What is the term for plankton that spend their entire life cycle as part of the plankton community?
A) Phytoplankton
B) Meroplankton
C) Holoplankton
D) Zooplankton
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