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