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