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