- 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) Grazing
B) Pollination
C) Burrowing
D) Erosion
- 3. Which organism is considered a primary producer in the plankton community?
A) Shrimp
B) Jellyfish
C) Herring
D) Phytoplankton
- 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) Diatoms
B) Shrimp
C) Copepods
D) Krill
- 6. What is the process by which zooplankton migrate vertically in the water column called?
A) Diel vertical migration
B) Horizontal dispersion
C) Sedimentation
D) Static suspension
- 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) Gas vacuoles
B) Stingers
C) Muscles
D) Eyes
- 9. What is the general term for small marine organisms that drift with ocean currents?
A) Krill
B) Tuna
C) Shark
D) Plankton
- 10. What is the term for plankton that spend their entire life cycle as part of the plankton community?
A) Meroplankton
B) Phytoplankton
C) Holoplankton
D) Zooplankton
- 11. What type of plankton are bacteria that drift in the water column?
A) Phytoplankton
B) Bacterioplankton
C) Virioplankton
D) Zooplankton
- 12. What is the term for plankton that spend only part of their life cycle as part of the plankton community?
A) Holoplankton
B) Meroplankton
C) Bacterioplankton
D) Zooplankton
- 13. Which of the following is not a type of plankton?
A) Bacterioplankton
B) Zooplankton
C) Phytoplankton
D) Jellyfish
- 14. Plankton are primarily found in which habitat?
A) Tundras
B) Mountains
C) Aquatic environments
D) Deserts
- 15. What is the term used to describe plankton that can move against currents?
A) Nekton
B) Benthos
C) Tychoplankton
D) Holoplankton
- 16. What is the main gas used by plankton in the process of photosynthesis?
A) Carbon dioxide
B) Hydrogen
C) Oxygen
D) Nitrogen
- 17. Which of the following is a type of harmful algal bloom caused by excess plankton growth?
A) Red tide
B) Yellow tide
C) Blue tide
D) Green tide
- 18. Plankton play a crucial role in the global carbon cycle by performing which process?
A) Respiration
B) Decomposition
C) Photosynthesis
D) Chemical weathering
- 19. Which of the following is a type of phytoplankton that can produce bioluminescence?
A) Amoebas
B) Flatworms
C) Dinoflagellates
D) Roundworms
- 20. 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) Seaweed
C) Marine snow
D) Coral reefs
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