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