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