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