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