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