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